Finding the Fourth Proportional to 378,347.49, 521,824.29 and 242,394.08
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Solution
The fourth proportional to 378,347.49, 521,824.29 and 242,394.08 is: 334,314.68
Step by Step Solution
- Step 1: Write the proportion equation
378,347.49 : 521,824.29 = 242,394.08 : x - Step 2: Convert to fraction form
378,347.49/521,824.29 = 242,394.08/x - Step 3: Cross multiply
378,347.49x = 521,824.29 × 242,394.08 - Step 4: Simplify right side
378,347.49x = 126,487,120,000.76 - Step 5: Solve for x
x = 126,487,120,000.76/378,347.49 - Step 6: Final answer
x = 334,314.68
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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.