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Finding the Fourth Proportional to 221,760.77, 332,693.45 and 71,989.55

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Solution

The fourth proportional to 221,760.77, 332,693.45 and 71,989.55 is: 108,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,760.77 : 332,693.45 = 71,989.55 : x
  2. Step 2: Convert to fraction form
    221,760.77/332,693.45 = 71,989.55/x
  3. Step 3: Cross multiply
    221,760.77x = 332,693.45 × 71,989.55
  4. Step 4: Simplify right side
    221,760.77x = 23,950,449,730.03
  5. Step 5: Solve for x
    x = 23,950,449,730.03/221,760.77
  6. Step 6: Final answer
    x = 108,001.29

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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.