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Finding the Fourth Proportional to 272,023.60, 408,034.80 and 72,344.02

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Solution

The fourth proportional to 272,023.60, 408,034.80 and 72,344.02 is: 108,515.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,023.60 : 408,034.80 = 72,344.02 : x
  2. Step 2: Convert to fraction form
    272,023.60/408,034.80 = 72,344.02/x
  3. Step 3: Cross multiply
    272,023.60x = 408,034.80 × 72,344.02
  4. Step 4: Simplify right side
    272,023.60x = 29,518,877,731.90
  5. Step 5: Solve for x
    x = 29,518,877,731.90/272,023.60
  6. Step 6: Final answer
    x = 108,515.87

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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.