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Finding the Fourth Proportional to 394,489.92, 591,834.24 and 114,005.28

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Solution

The fourth proportional to 394,489.92, 591,834.24 and 114,005.28 is: 171,036.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,489.92 : 591,834.24 = 114,005.28 : x
  2. Step 2: Convert to fraction form
    394,489.92/591,834.24 = 114,005.28/x
  3. Step 3: Cross multiply
    394,489.92x = 591,834.24 × 114,005.28
  4. Step 4: Simplify right side
    394,489.92x = 67,472,228,244.79
  5. Step 5: Solve for x
    x = 67,472,228,244.79/394,489.92
  6. Step 6: Final answer
    x = 171,036.63

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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.