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Finding the Fourth Proportional to 272,589.68, 408,945.50 and 83,064.88

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Solution

The fourth proportional to 272,589.68, 408,945.50 and 83,064.88 is: 124,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,589.68 : 408,945.50 = 83,064.88 : x
  2. Step 2: Convert to fraction form
    272,589.68/408,945.50 = 83,064.88/x
  3. Step 3: Cross multiply
    272,589.68x = 408,945.50 × 83,064.88
  4. Step 4: Simplify right side
    272,589.68x = 33,969,007,446.35
  5. Step 5: Solve for x
    x = 33,969,007,446.35/272,589.68
  6. Step 6: Final answer
    x = 124,615.90

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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.