Home / 258,439.59-387,899.27-132,170.07

Finding the Fourth Proportional to 258,439.59, 387,899.27 and 132,170.07

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Solution

The fourth proportional to 258,439.59, 387,899.27 and 132,170.07 is: 198,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,439.59 : 387,899.27 = 132,170.07 : x
  2. Step 2: Convert to fraction form
    258,439.59/387,899.27 = 132,170.07/x
  3. Step 3: Cross multiply
    258,439.59x = 387,899.27 × 132,170.07
  4. Step 4: Simplify right side
    258,439.59x = 51,268,673,008.00
  5. Step 5: Solve for x
    x = 51,268,673,008.00/258,439.59
  6. Step 6: Final answer
    x = 198,377.78

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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.