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Finding the Fourth Proportional to 221,796.20, 332,256.90 and 132,785.30

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Solution

The fourth proportional to 221,796.20, 332,256.90 and 132,785.30 is: 198,916.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,796.20 : 332,256.90 = 132,785.30 : x
  2. Step 2: Convert to fraction form
    221,796.20/332,256.90 = 132,785.30/x
  3. Step 3: Cross multiply
    221,796.20x = 332,256.90 × 132,785.30
  4. Step 4: Simplify right side
    221,796.20x = 44,118,832,143.57
  5. Step 5: Solve for x
    x = 44,118,832,143.57/221,796.20
  6. Step 6: Final answer
    x = 198,916.09

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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.