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Finding the Fourth Proportional to 275,288.40, 412,932.60 and 88,318.80

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Solution

The fourth proportional to 275,288.40, 412,932.60 and 88,318.80 is: 132,478.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,288.40 : 412,932.60 = 88,318.80 : x
  2. Step 2: Convert to fraction form
    275,288.40/412,932.60 = 88,318.80/x
  3. Step 3: Cross multiply
    275,288.40x = 412,932.60 × 88,318.80
  4. Step 4: Simplify right side
    275,288.40x = 36,469,711,712.88
  5. Step 5: Solve for x
    x = 36,469,711,712.88/275,288.40
  6. Step 6: Final answer
    x = 132,478.20

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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.