Finding the Fourth Proportional to 311,813,757.22, 430,297,765.41 and 172,581,538.18
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Solution
The fourth proportional to 311,813,757.22, 430,297,765.41 and 172,581,538.18 is: 238,159,633.79
Step by Step Solution
- Step 1: Write the proportion equation
311,813,757.22 : 430,297,765.41 = 172,581,538.18 : x - Step 2: Convert to fraction form
311,813,757.22/430,297,765.41 = 172,581,538.18/x - Step 3: Cross multiply
311,813,757.22x = 430,297,765.41 × 172,581,538.18 - Step 4: Simplify right side
311,813,757.22x = 74,261,450,229,874,608 - Step 5: Solve for x
x = 74,261,450,229,874,608/311,813,757.22 - Step 6: Final answer
x = 238,159,633.79
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.