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Finding the Fourth Proportional to 221,835.52, 332,780.76 and 86,882.08

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Solution

The fourth proportional to 221,835.52, 332,780.76 and 86,882.08 is: 130,333.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,835.52 : 332,780.76 = 86,882.08 : x
  2. Step 2: Convert to fraction form
    221,835.52/332,780.76 = 86,882.08/x
  3. Step 3: Cross multiply
    221,835.52x = 332,780.76 × 86,882.08
  4. Step 4: Simplify right side
    221,835.52x = 28,912,684,612.78
  5. Step 5: Solve for x
    x = 28,912,684,612.78/221,835.52
  6. Step 6: Final answer
    x = 130,333.88

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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.