Finding the Fourth Proportional to 378,869.62, 522,839.01 and 209,102.53
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Solution
The fourth proportional to 378,869.62, 522,839.01 and 209,102.53 is: 288,560.90
Step by Step Solution
- Step 1: Write the proportion equation
378,869.62 : 522,839.01 = 209,102.53 : x - Step 2: Convert to fraction form
378,869.62/522,839.01 = 209,102.53/x - Step 3: Cross multiply
378,869.62x = 522,839.01 × 209,102.53 - Step 4: Simplify right side
378,869.62x = 109,326,960,035.18 - Step 5: Solve for x
x = 109,326,960,035.18/378,869.62 - Step 6: Final answer
x = 288,560.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.