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Finding the Fourth Proportional to 221,793.40, 332,738.70 and 88,640.20

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Solution

The fourth proportional to 221,793.40, 332,738.70 and 88,640.20 is: 132,979.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,793.40 : 332,738.70 = 88,640.20 : x
  2. Step 2: Convert to fraction form
    221,793.40/332,738.70 = 88,640.20/x
  3. Step 3: Cross multiply
    221,793.40x = 332,738.70 × 88,640.20
  4. Step 4: Simplify right side
    221,793.40x = 29,494,024,915.74
  5. Step 5: Solve for x
    x = 29,494,024,915.74/221,793.40
  6. Step 6: Final answer
    x = 132,979.72

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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.