If costs go up, there will be a pro rata increase in prices.

如果成本增加，价格就会相应上涨。

《牛津高阶英汉双解词典》

The loss was shared pro rata.

损失按比例分摊.

《现代英汉综合大词典》

The cash or scrip would be offered as part of a pro rata return of capital to shareholders.

作为按比例资本收益的一部分，股票持有者将获得现金或股息凭证。

柯林斯例句