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Finding the Fourth Proportional to 381,248.56, 572,247.06 and 318,471.94

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Solution

The fourth proportional to 381,248.56, 572,247.06 and 318,471.94 is: 478,020.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,248.56 : 572,247.06 = 318,471.94 : x
  2. Step 2: Convert to fraction form
    381,248.56/572,247.06 = 318,471.94/x
  3. Step 3: Cross multiply
    381,248.56x = 572,247.06 × 318,471.94
  4. Step 4: Simplify right side
    381,248.56x = 182,244,631,357.50
  5. Step 5: Solve for x
    x = 182,244,631,357.50/381,248.56
  6. Step 6: Final answer
    x = 478,020.51

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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.