Home / 231,355.26-319,268.03-129,379.56

Finding the Fourth Proportional to 231,355.26, 319,268.03 and 129,379.56

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Solution

The fourth proportional to 231,355.26, 319,268.03 and 129,379.56 is: 178,542.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,355.26 : 319,268.03 = 129,379.56 : x
  2. Step 2: Convert to fraction form
    231,355.26/319,268.03 = 129,379.56/x
  3. Step 3: Cross multiply
    231,355.26x = 319,268.03 × 129,379.56
  4. Step 4: Simplify right side
    231,355.26x = 41,306,756,596.57
  5. Step 5: Solve for x
    x = 41,306,756,596.57/231,355.26
  6. Step 6: Final answer
    x = 178,542.54

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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.