Finding the Fourth Proportional to 378,121.13, 521,818.29 and 208,366.19
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Solution
The fourth proportional to 378,121.13, 521,818.29 and 208,366.19 is: 287,551.47
Step by Step Solution
- Step 1: Write the proportion equation
378,121.13 : 521,818.29 = 208,366.19 : x - Step 2: Convert to fraction form
378,121.13/521,818.29 = 208,366.19/x - Step 3: Cross multiply
378,121.13x = 521,818.29 × 208,366.19 - Step 4: Simplify right side
378,121.13x = 108,729,286,350.52 - Step 5: Solve for x
x = 108,729,286,350.52/378,121.13 - Step 6: Final answer
x = 287,551.47
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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.