Home / 394,171.66-591,159.07-128,008.36

Finding the Fourth Proportional to 394,171.66, 591,159.07 and 128,008.36

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Solution

The fourth proportional to 394,171.66, 591,159.07 and 128,008.36 is: 191,980.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,171.66 : 591,159.07 = 128,008.36 : x
  2. Step 2: Convert to fraction form
    394,171.66/591,159.07 = 128,008.36/x
  3. Step 3: Cross multiply
    394,171.66x = 591,159.07 × 128,008.36
  4. Step 4: Simplify right side
    394,171.66x = 75,673,301,251.91
  5. Step 5: Solve for x
    x = 75,673,301,251.91/394,171.66
  6. Step 6: Final answer
    x = 191,980.57

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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.