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Finding the Fourth Proportional to 272,069.60, 408,105.34 and 82,531.60

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Solution

The fourth proportional to 272,069.60, 408,105.34 and 82,531.60 is: 123,797.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,069.60 : 408,105.34 = 82,531.60 : x
  2. Step 2: Convert to fraction form
    272,069.60/408,105.34 = 82,531.60/x
  3. Step 3: Cross multiply
    272,069.60x = 408,105.34 × 82,531.60
  4. Step 4: Simplify right side
    272,069.60x = 33,681,585,452.15
  5. Step 5: Solve for x
    x = 33,681,585,452.15/272,069.60
  6. Step 6: Final answer
    x = 123,797.68

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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.