Home / 231,480.30-319,441.20-129,505.26

Finding the Fourth Proportional to 231,480.30, 319,441.20 and 129,505.26

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Solution

The fourth proportional to 231,480.30, 319,441.20 and 129,505.26 is: 178,716.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,480.30 : 319,441.20 = 129,505.26 : x
  2. Step 2: Convert to fraction form
    231,480.30/319,441.20 = 129,505.26/x
  3. Step 3: Cross multiply
    231,480.30x = 319,441.20 × 129,505.26
  4. Step 4: Simplify right side
    231,480.30x = 41,369,315,660.71
  5. Step 5: Solve for x
    x = 41,369,315,660.71/231,480.30
  6. Step 6: Final answer
    x = 178,716.36

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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.