Home / 231,308.55-319,191.03-129,342.42

Finding the Fourth Proportional to 231,308.55, 319,191.03 and 129,342.42

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Solution

The fourth proportional to 231,308.55, 319,191.03 and 129,342.42 is: 178,484.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,308.55 : 319,191.03 = 129,342.42 : x
  2. Step 2: Convert to fraction form
    231,308.55/319,191.03 = 129,342.42/x
  3. Step 3: Cross multiply
    231,308.55x = 319,191.03 × 129,342.42
  4. Step 4: Simplify right side
    231,308.55x = 41,284,940,262.49
  5. Step 5: Solve for x
    x = 41,284,940,262.49/231,308.55
  6. Step 6: Final answer
    x = 178,484.28

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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.