Home / 394,169.22-591,155.42-128,005.92

Finding the Fourth Proportional to 394,169.22, 591,155.42 and 128,005.92

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Solution

The fourth proportional to 394,169.22, 591,155.42 and 128,005.92 is: 191,976.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,169.22 : 591,155.42 = 128,005.92 : x
  2. Step 2: Convert to fraction form
    394,169.22/591,155.42 = 128,005.92/x
  3. Step 3: Cross multiply
    394,169.22x = 591,155.42 × 128,005.92
  4. Step 4: Simplify right side
    394,169.22x = 75,671,392,760.06
  5. Step 5: Solve for x
    x = 75,671,392,760.06/394,169.22
  6. Step 6: Final answer
    x = 191,976.92

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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.