Finding the Fourth Proportional to 378,153.29, 521,844.84 and 206,072.79
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Solution
The fourth proportional to 378,153.29, 521,844.84 and 206,072.79 is: 284,376.80
Step by Step Solution
- Step 1: Write the proportion equation
378,153.29 : 521,844.84 = 206,072.79 : x - Step 2: Convert to fraction form
378,153.29/521,844.84 = 206,072.79/x - Step 3: Cross multiply
378,153.29x = 521,844.84 × 206,072.79 - Step 4: Simplify right side
378,153.29x = 107,538,022,125.90 - Step 5: Solve for x
x = 107,538,022,125.90/378,153.29 - Step 6: Final answer
x = 284,376.80
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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.