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Finding the Fourth Proportional to 221,572.20, 332,406.90 and 109,306.20

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Solution

The fourth proportional to 221,572.20, 332,406.90 and 109,306.20 is: 163,983.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,572.20 : 332,406.90 = 109,306.20 : x
  2. Step 2: Convert to fraction form
    221,572.20/332,406.90 = 109,306.20/x
  3. Step 3: Cross multiply
    221,572.20x = 332,406.90 × 109,306.20
  4. Step 4: Simplify right side
    221,572.20x = 36,334,135,092.78
  5. Step 5: Solve for x
    x = 36,334,135,092.78/221,572.20
  6. Step 6: Final answer
    x = 163,983.28

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1.5x scale

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.