The phrase "a minimum proportion of their" is correct and usable in written English.
It can be used when discussing a required or specified amount or percentage related to a group or category.
Example: "The study requires that a minimum proportion of their participants be from diverse backgrounds to ensure inclusivity."
Alternatives: "a required percentage of their" or "a necessary share of their".
The main way of keeping banks safe is through international rules, known as the Basel accord, that limit their exposure to risk by stipulating that their capital must at least equal a minimum proportion of their assets (weighted by risk).
Nick Clegg's leadership came under its most severe challenge since the coalition was formed when the Liberal Democrat conference at the weekend refused to endorse the health bill, and he faced a damaging public split in his party over his plans to force the rich to pay a minimum proportion of their earnings in tax.
Require the banks to keep a certain minimum proportion of their assets in reserve, monitor their lending policies, place restrictions on the businesses they can enter, and so forth.
One of its tasks is fending off American cultural domination by enforcing a requirement that radio stations and television channels air a minimum proportion of Canadian content.
Moreover, legislation can be passed in the assembly only if it has the support of a minimum proportion of both unionist and nationalist members.
"Mandatory inclusionary zoning" would raise permissible density in some areas, but developers would have to ensure that a minimum proportion of units meets the city's definition of affordable.
Options in a paper expected to be published on Monday will include: forcing new selective schools to take a minimum proportion of pupils from lower income households requiring them to establish a new non-selective free school, or a primary feeder school in an area with a high density of lower income households requiring them to sponsor an existing underperforming, non-selective academy school.
In real-life situations, we always use a mixture that has at least a minimum proportion of all the ingredients present.
Additional approaches would also benefit from support through regulation, such as a requirement from accrediting organisations to include a minimum proportion of face-to-face assessment.
These models assume that a minimum proportion of same-color neighbors is still desirable but above that, the larger the proportion, the less satisfied the agents are and the more likely they are to move.
