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Finding the Fourth Proportional to 381,950.70, 572,926.05 and 221,862.30

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Solution

The fourth proportional to 381,950.70, 572,926.05 and 221,862.30 is: 332,793.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,950.70 : 572,926.05 = 221,862.30 : x
  2. Step 2: Convert to fraction form
    381,950.70/572,926.05 = 221,862.30/x
  3. Step 3: Cross multiply
    381,950.70x = 572,926.05 × 221,862.30
  4. Step 4: Simplify right side
    381,950.70x = 127,110,691,182.92
  5. Step 5: Solve for x
    x = 127,110,691,182.92/381,950.70
  6. Step 6: Final answer
    x = 332,793.45

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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.