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Finding the Fourth Proportional to 272,023.83, 408,034.94 and 72,344.05

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Solution

The fourth proportional to 272,023.83, 408,034.94 and 72,344.05 is: 108,515.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,023.83 : 408,034.94 = 72,344.05 : x
  2. Step 2: Convert to fraction form
    272,023.83/408,034.94 = 72,344.05/x
  3. Step 3: Cross multiply
    272,023.83x = 408,034.94 × 72,344.05
  4. Step 4: Simplify right side
    272,023.83x = 29,518,898,719.30
  5. Step 5: Solve for x
    x = 29,518,898,719.30/272,023.83
  6. Step 6: Final answer
    x = 108,515.86

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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.