Home / 231,453.72-319,391.06-129,461.49

Finding the Fourth Proportional to 231,453.72, 319,391.06 and 129,461.49

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Solution

The fourth proportional to 231,453.72, 319,391.06 and 129,461.49 is: 178,648.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,453.72 : 319,391.06 = 129,461.49 : x
  2. Step 2: Convert to fraction form
    231,453.72/319,391.06 = 129,461.49/x
  3. Step 3: Cross multiply
    231,453.72x = 319,391.06 × 129,461.49
  4. Step 4: Simplify right side
    231,453.72x = 41,348,841,872.97
  5. Step 5: Solve for x
    x = 41,348,841,872.97/231,453.72
  6. Step 6: Final answer
    x = 178,648.42

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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.