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Finding the Fourth Proportional to 272,024.80, 408,037.20 and 72,344.80

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Solution

The fourth proportional to 272,024.80, 408,037.20 and 72,344.80 is: 108,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,024.80 : 408,037.20 = 72,344.80 : x
  2. Step 2: Convert to fraction form
    272,024.80/408,037.20 = 72,344.80/x
  3. Step 3: Cross multiply
    272,024.80x = 408,037.20 × 72,344.80
  4. Step 4: Simplify right side
    272,024.80x = 29,519,369,626.56
  5. Step 5: Solve for x
    x = 29,519,369,626.56/272,024.80
  6. Step 6: Final answer
    x = 108,517.20

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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.