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Finding the Fourth Proportional to 221,481.10, 332,221.65 and 155,125.90

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Solution

The fourth proportional to 221,481.10, 332,221.65 and 155,125.90 is: 232,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,481.10 : 332,221.65 = 155,125.90 : x
  2. Step 2: Convert to fraction form
    221,481.10/332,221.65 = 155,125.90/x
  3. Step 3: Cross multiply
    221,481.10x = 332,221.65 × 155,125.90
  4. Step 4: Simplify right side
    221,481.10x = 51,536,182,455.74
  5. Step 5: Solve for x
    x = 51,536,182,455.74/221,481.10
  6. Step 6: Final answer
    x = 232,688.85

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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.