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Finding the Fourth Proportional to 381,999.09, 527,170.11 and 220,839.87

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Solution

The fourth proportional to 381,999.09, 527,170.11 and 220,839.87 is: 304,765.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,999.09 : 527,170.11 = 220,839.87 : x
  2. Step 2: Convert to fraction form
    381,999.09/527,170.11 = 220,839.87/x
  3. Step 3: Cross multiply
    381,999.09x = 527,170.11 × 220,839.87
  4. Step 4: Simplify right side
    381,999.09x = 116,420,178,560.29
  5. Step 5: Solve for x
    x = 116,420,178,560.29/381,999.09
  6. Step 6: Final answer
    x = 304,765.59

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1.5x scale

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.