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Finding the Fourth Proportional to 272,155.30, 408,253.56 and 72,474.88

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Solution

The fourth proportional to 272,155.30, 408,253.56 and 72,474.88 is: 108,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,155.30 : 408,253.56 = 72,474.88 : x
  2. Step 2: Convert to fraction form
    272,155.30/408,253.56 = 72,474.88/x
  3. Step 3: Cross multiply
    272,155.30x = 408,253.56 × 72,474.88
  4. Step 4: Simplify right side
    272,155.30x = 29,588,127,770.57
  5. Step 5: Solve for x
    x = 29,588,127,770.57/272,155.30
  6. Step 6: Final answer
    x = 108,717.81

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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.