Home / 261,997.28-393,019.68-72,469.52

Finding the Fourth Proportional to 261,997.28, 393,019.68 and 72,469.52

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Solution

The fourth proportional to 261,997.28, 393,019.68 and 72,469.52 is: 108,710.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,997.28 : 393,019.68 = 72,469.52 : x
  2. Step 2: Convert to fraction form
    261,997.28/393,019.68 = 72,469.52/x
  3. Step 3: Cross multiply
    261,997.28x = 393,019.68 × 72,469.52
  4. Step 4: Simplify right side
    261,997.28x = 28,481,947,560.15
  5. Step 5: Solve for x
    x = 28,481,947,560.15/261,997.28
  6. Step 6: Final answer
    x = 108,710.85

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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.