Home / 381,932.78-527,132.20-220,885.74

Finding the Fourth Proportional to 381,932.78, 527,132.20 and 220,885.74

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Solution

The fourth proportional to 381,932.78, 527,132.20 and 220,885.74 is: 304,859.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,932.78 : 527,132.20 = 220,885.74 : x
  2. Step 2: Convert to fraction form
    381,932.78/527,132.20 = 220,885.74/x
  3. Step 3: Cross multiply
    381,932.78x = 527,132.20 × 220,885.74
  4. Step 4: Simplify right side
    381,932.78x = 116,435,986,074.83
  5. Step 5: Solve for x
    x = 116,435,986,074.83/381,932.78
  6. Step 6: Final answer
    x = 304,859.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.