Home / 230,589.38-318,213.35-129,987.38

Finding the Fourth Proportional to 230,589.38, 318,213.35 and 129,987.38

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Solution

The fourth proportional to 230,589.38, 318,213.35 and 129,987.38 is: 179,382.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,589.38 : 318,213.35 = 129,987.38 : x
  2. Step 2: Convert to fraction form
    230,589.38/318,213.35 = 129,987.38/x
  3. Step 3: Cross multiply
    230,589.38x = 318,213.35 × 129,987.38
  4. Step 4: Simplify right side
    230,589.38x = 41,363,717,406.52
  5. Step 5: Solve for x
    x = 41,363,717,406.52/230,589.38
  6. Step 6: Final answer
    x = 179,382.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.