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Finding the Fourth Proportional to 318,812.78, 439,944.80 and 182,839.70

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Solution

The fourth proportional to 318,812.78, 439,944.80 and 182,839.70 is: 252,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,812.78 : 439,944.80 = 182,839.70 : x
  2. Step 2: Convert to fraction form
    318,812.78/439,944.80 = 182,839.70/x
  3. Step 3: Cross multiply
    318,812.78x = 439,944.80 × 182,839.70
  4. Step 4: Simplify right side
    318,812.78x = 80,439,375,248.56
  5. Step 5: Solve for x
    x = 80,439,375,248.56/318,812.78
  6. Step 6: Final answer
    x = 252,309.13

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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.