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Finding the Fourth Proportional to 394,451.52, 591,552 and 128,150.52

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Solution

The fourth proportional to 394,451.52, 591,552 and 128,150.52 is: 192,185.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,451.52 : 591,552 = 128,150.52 : x
  2. Step 2: Convert to fraction form
    394,451.52/591,552 = 128,150.52/x
  3. Step 3: Cross multiply
    394,451.52x = 591,552 × 128,150.52
  4. Step 4: Simplify right side
    394,451.52x = 75,807,696,407.04
  5. Step 5: Solve for x
    x = 75,807,696,407.04/394,451.52
  6. Step 6: Final answer
    x = 192,185.08

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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.