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Finding the Fourth Proportional to 272,035.30, 408,052.95 and 72,355.30

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Solution

The fourth proportional to 272,035.30, 408,052.95 and 72,355.30 is: 108,532.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,035.30 : 408,052.95 = 72,355.30 : x
  2. Step 2: Convert to fraction form
    272,035.30/408,052.95 = 72,355.30/x
  3. Step 3: Cross multiply
    272,035.30x = 408,052.95 × 72,355.30
  4. Step 4: Simplify right side
    272,035.30x = 29,524,793,613.14
  5. Step 5: Solve for x
    x = 29,524,793,613.14/272,035.30
  6. Step 6: Final answer
    x = 108,532.95

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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.