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Finding the Fourth Proportional to 221,753.20, 332,629.80 and 81,493.60

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Solution

The fourth proportional to 221,753.20, 332,629.80 and 81,493.60 is: 122,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,753.20 : 332,629.80 = 81,493.60 : x
  2. Step 2: Convert to fraction form
    221,753.20/332,629.80 = 81,493.60/x
  3. Step 3: Cross multiply
    221,753.20x = 332,629.80 × 81,493.60
  4. Step 4: Simplify right side
    221,753.20x = 27,107,199,869.28
  5. Step 5: Solve for x
    x = 27,107,199,869.28/221,753.20
  6. Step 6: Final answer
    x = 122,240.40

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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.