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Finding the Fourth Proportional to 221,345.55, 332,102.16 and 132,662.70

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Solution

The fourth proportional to 221,345.55, 332,102.16 and 132,662.70 is: 199,044.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,345.55 : 332,102.16 = 132,662.70 : x
  2. Step 2: Convert to fraction form
    221,345.55/332,102.16 = 132,662.70/x
  3. Step 3: Cross multiply
    221,345.55x = 332,102.16 × 132,662.70
  4. Step 4: Simplify right side
    221,345.55x = 44,057,569,221.43
  5. Step 5: Solve for x
    x = 44,057,569,221.43/221,345.55
  6. Step 6: Final answer
    x = 199,044.30

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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.