“按比例分配”常见的英文表达有 “allocate in proportion” 或 “distribute in proportion”。
allocate in proportion：强调按照一定比例来分配资源、资金、任务等。例如：The funds will be allocated in proportion to the needs of each department.（资金将按照各部门的需求按比例分配。）
distribute in proportion：侧重于将物品、数量等按照比例进行分发。例如：The prizes were distributed in proportion to the students' scores.（奖品按照学生的分数按比例分发。 ）