Home / 381,819.70-572,729.55-221,731.30

Finding the Fourth Proportional to 381,819.70, 572,729.55 and 221,731.30

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Solution

The fourth proportional to 381,819.70, 572,729.55 and 221,731.30 is: 332,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,819.70 : 572,729.55 = 221,731.30 : x
  2. Step 2: Convert to fraction form
    381,819.70/572,729.55 = 221,731.30/x
  3. Step 3: Cross multiply
    381,819.70x = 572,729.55 × 221,731.30
  4. Step 4: Simplify right side
    381,819.70x = 126,992,067,669.92
  5. Step 5: Solve for x
    x = 126,992,067,669.92/381,819.70
  6. Step 6: Final answer
    x = 332,596.95

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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.