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Finding the Fourth Proportional to 272,015.60, 408,022.78 and 72,336.04

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Solution

The fourth proportional to 272,015.60, 408,022.78 and 72,336.04 is: 108,503.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,015.60 : 408,022.78 = 72,336.04 : x
  2. Step 2: Convert to fraction form
    272,015.60/408,022.78 = 72,336.04/x
  3. Step 3: Cross multiply
    272,015.60x = 408,022.78 × 72,336.04
  4. Step 4: Simplify right side
    272,015.60x = 29,514,752,134.99
  5. Step 5: Solve for x
    x = 29,514,752,134.99/272,015.60
  6. Step 6: Final answer
    x = 108,503.90

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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.