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Finding the Fourth Proportional to 272,366.85, 408,550.28 and 72,687.95

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Solution

The fourth proportional to 272,366.85, 408,550.28 and 72,687.95 is: 109,031.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,366.85 : 408,550.28 = 72,687.95 : x
  2. Step 2: Convert to fraction form
    272,366.85/408,550.28 = 72,687.95/x
  3. Step 3: Cross multiply
    272,366.85x = 408,550.28 × 72,687.95
  4. Step 4: Simplify right side
    272,366.85x = 29,696,679,918.93
  5. Step 5: Solve for x
    x = 29,696,679,918.93/272,366.85
  6. Step 6: Final answer
    x = 109,031.92

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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.