Home / 231,371.73-319,220.33-129,383.42

Finding the Fourth Proportional to 231,371.73, 319,220.33 and 129,383.42

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Solution

The fourth proportional to 231,371.73, 319,220.33 and 129,383.42 is: 178,508.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,371.73 : 319,220.33 = 129,383.42 : x
  2. Step 2: Convert to fraction form
    231,371.73/319,220.33 = 129,383.42/x
  3. Step 3: Cross multiply
    231,371.73x = 319,220.33 × 129,383.42
  4. Step 4: Simplify right side
    231,371.73x = 41,301,815,785.91
  5. Step 5: Solve for x
    x = 41,301,815,785.91/231,371.73
  6. Step 6: Final answer
    x = 178,508.48

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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.