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Finding the Fourth Proportional to 394,144.56, 591,212.52 and 113,652.72

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Solution

The fourth proportional to 394,144.56, 591,212.52 and 113,652.72 is: 170,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,144.56 : 591,212.52 = 113,652.72 : x
  2. Step 2: Convert to fraction form
    394,144.56/591,212.52 = 113,652.72/x
  3. Step 3: Cross multiply
    394,144.56x = 591,212.52 × 113,652.72
  4. Step 4: Simplify right side
    394,144.56x = 67,192,910,996.05
  5. Step 5: Solve for x
    x = 67,192,910,996.05/394,144.56
  6. Step 6: Final answer
    x = 170,477.83

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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.