Home / 231,256.46-319,136.28-129,287.58

Finding the Fourth Proportional to 231,256.46, 319,136.28 and 129,287.58

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Solution

The fourth proportional to 231,256.46, 319,136.28 and 129,287.58 is: 178,418.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,256.46 : 319,136.28 = 129,287.58 : x
  2. Step 2: Convert to fraction form
    231,256.46/319,136.28 = 129,287.58/x
  3. Step 3: Cross multiply
    231,256.46x = 319,136.28 × 129,287.58
  4. Step 4: Simplify right side
    231,256.46x = 41,260,357,331.40
  5. Step 5: Solve for x
    x = 41,260,357,331.40/231,256.46
  6. Step 6: Final answer
    x = 178,418.19

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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.