Home / 231,474.28-319,328.58-135,979.24

Finding the Fourth Proportional to 231,474.28, 319,328.58 and 135,979.24

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Solution

The fourth proportional to 231,474.28, 319,328.58 and 135,979.24 is: 187,589.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,474.28 : 319,328.58 = 135,979.24 : x
  2. Step 2: Convert to fraction form
    231,474.28/319,328.58 = 135,979.24/x
  3. Step 3: Cross multiply
    231,474.28x = 319,328.58 × 135,979.24
  4. Step 4: Simplify right side
    231,474.28x = 43,422,057,618.68
  5. Step 5: Solve for x
    x = 43,422,057,618.68/231,474.28
  6. Step 6: Final answer
    x = 187,589.12

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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.