Home / 394,308.48-591,632.16-128,150.56

Finding the Fourth Proportional to 394,308.48, 591,632.16 and 128,150.56

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Solution

The fourth proportional to 394,308.48, 591,632.16 and 128,150.56 is: 192,280.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,308.48 : 591,632.16 = 128,150.56 : x
  2. Step 2: Convert to fraction form
    394,308.48/591,632.16 = 128,150.56/x
  3. Step 3: Cross multiply
    394,308.48x = 591,632.16 × 128,150.56
  4. Step 4: Simplify right side
    394,308.48x = 75,817,992,618.01
  5. Step 5: Solve for x
    x = 75,817,992,618.01/394,308.48
  6. Step 6: Final answer
    x = 192,280.91

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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.