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Finding the Fourth Proportional to 221,481.70, 332,003.85 and 109,069.90

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Solution

The fourth proportional to 221,481.70, 332,003.85 and 109,069.90 is: 163,497.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,481.70 : 332,003.85 = 109,069.90 : x
  2. Step 2: Convert to fraction form
    221,481.70/332,003.85 = 109,069.90/x
  3. Step 3: Cross multiply
    221,481.70x = 332,003.85 × 109,069.90
  4. Step 4: Simplify right side
    221,481.70x = 36,211,626,719.12
  5. Step 5: Solve for x
    x = 36,211,626,719.12/221,481.70
  6. Step 6: Final answer
    x = 163,497.15

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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.