Finding the Fourth Proportional to 378,787.38, 567,639.75 and 278,158.14
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Solution
The fourth proportional to 378,787.38, 567,639.75 and 278,158.14 is: 416,839.70
Step by Step Solution
- Step 1: Write the proportion equation
378,787.38 : 567,639.75 = 278,158.14 : x - Step 2: Convert to fraction form
378,787.38/567,639.75 = 278,158.14/x - Step 3: Cross multiply
378,787.38x = 567,639.75 × 278,158.14 - Step 4: Simplify right side
378,787.38x = 157,893,617,050.07 - Step 5: Solve for x
x = 157,893,617,050.07/378,787.38 - Step 6: Final answer
x = 416,839.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.