"expand the proportion" is a correct and usable phrase in written English.
You can use it when you want to describe an increase in the size or quantity of something relative to something else. For example, "The company is seeking to expand the proportion of the budget allocated for research and development."
Should the secondary market expand, the proportion of policies that lapse and on which insurers pay no claims would drop.
Instead, we need to expand the proportion of the population that takes part in public decision-making – not just in voting but also in discussing and deciding what to do about collective problems.
Paper: "Network Externality and Subsidy Structure in Two-Sided Markets: Evidence from Electric Vehicle Incentives" In an effort to combat global warming and reduce emissions, governments across the world are implementing increasingly diverse incentives to expand the proportion of electric vehicles on the roads.
Based on this evidence, it is recommended to expand the proportion of recruitment from the special track, while reducing normal track recruitment.
Based on the two merits of the special track (higher intention to complete the mandatory 3-year public service, and better clinical competencies) policymakers should expand the proportion of enrolment from CPIRD and ODOD.
Also, the academy, which awards the Oscars, slightly expanded the proportion of documentarians among its 6,000 voting members.
The AAA established the Agricultural Adjustment Administration, which was charged with increasing prices of agricultural commodities and expanding the proportion of national income going to farmers.
Although the overall budget for TÜBİTAK has expanded, the proportion for basic science has shrunk.
Increasing studies have shown that CSCs display treatment resistance to chemotherapy and radiation therapy [4]-[6],[25], while clinical neoadjuvant chemotherapy expanded the proportion of CSCs [20],[20].
In implementing the plan, he intends to draw on lessons learned from expanding the proportion of minority graduate students in MIT's biology department from 5% to 18% over 6 years.
In addition, we share the perspective of Vaupel and Loichinger [ 40] regarding the benefit of expanding the proportion of labor force among developed countries.
