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Finding the Fourth Proportional to 221,791.20, 332,249.40 and 132,780.30

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Solution

The fourth proportional to 221,791.20, 332,249.40 and 132,780.30 is: 198,908.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,791.20 : 332,249.40 = 132,780.30 : x
  2. Step 2: Convert to fraction form
    221,791.20/332,249.40 = 132,780.30/x
  3. Step 3: Cross multiply
    221,791.20x = 332,249.40 × 132,780.30
  4. Step 4: Simplify right side
    221,791.20x = 44,116,175,006.82
  5. Step 5: Solve for x
    x = 44,116,175,006.82/221,791.20
  6. Step 6: Final answer
    x = 198,908.59

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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.