Finding the Fourth Proportional to 420,553.76, 580,343.91 and 239,248.58
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Solution
The fourth proportional to 420,553.76, 580,343.91 and 239,248.58 is: 330,151.50
Step by Step Solution
- Step 1: Write the proportion equation
420,553.76 : 580,343.91 = 239,248.58 : x - Step 2: Convert to fraction form
420,553.76/580,343.91 = 239,248.58/x - Step 3: Cross multiply
420,553.76x = 580,343.91 × 239,248.58 - Step 4: Simplify right side
420,553.76x = 138,846,456,379.15 - Step 5: Solve for x
x = 138,846,456,379.15/420,553.76 - Step 6: Final answer
x = 330,151.50
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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.