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Finding the Fourth Proportional to 543,761.48, 815,193.12 and 239,939.30

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Solution

The fourth proportional to 543,761.48, 815,193.12 and 239,939.30 is: 359,710.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,761.48 : 815,193.12 = 239,939.30 : x
  2. Step 2: Convert to fraction form
    543,761.48/815,193.12 = 239,939.30/x
  3. Step 3: Cross multiply
    543,761.48x = 815,193.12 × 239,939.30
  4. Step 4: Simplify right side
    543,761.48x = 195,596,866,577.62
  5. Step 5: Solve for x
    x = 195,596,866,577.62/543,761.48
  6. Step 6: Final answer
    x = 359,710.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.