Home / 231,395.12-319,326.02-129,422.33

Finding the Fourth Proportional to 231,395.12, 319,326.02 and 129,422.33

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Solution

The fourth proportional to 231,395.12, 319,326.02 and 129,422.33 is: 178,603.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,395.12 : 319,326.02 = 129,422.33 : x
  2. Step 2: Convert to fraction form
    231,395.12/319,326.02 = 129,422.33/x
  3. Step 3: Cross multiply
    231,395.12x = 319,326.02 × 129,422.33
  4. Step 4: Simplify right side
    231,395.12x = 41,327,917,538.03
  5. Step 5: Solve for x
    x = 41,327,917,538.03/231,395.12
  6. Step 6: Final answer
    x = 178,603.24

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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.