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Finding the Fourth Proportional to 279,343.35, 385,502.57 and 158,489.73

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Solution

The fourth proportional to 279,343.35, 385,502.57 and 158,489.73 is: 218,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,343.35 : 385,502.57 = 158,489.73 : x
  2. Step 2: Convert to fraction form
    279,343.35/385,502.57 = 158,489.73/x
  3. Step 3: Cross multiply
    279,343.35x = 385,502.57 × 158,489.73
  4. Step 4: Simplify right side
    279,343.35x = 61,098,198,233.61
  5. Step 5: Solve for x
    x = 61,098,198,233.61/279,343.35
  6. Step 6: Final answer
    x = 218,720.79

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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.