Home / 231,359.40-319,273.70-129,383.69

Finding the Fourth Proportional to 231,359.40, 319,273.70 and 129,383.69

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Solution

The fourth proportional to 231,359.40, 319,273.70 and 129,383.69 is: 178,548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,359.40 : 319,273.70 = 129,383.69 : x
  2. Step 2: Convert to fraction form
    231,359.40/319,273.70 = 129,383.69/x
  3. Step 3: Cross multiply
    231,359.40x = 319,273.70 × 129,383.69
  4. Step 4: Simplify right side
    231,359.40x = 41,308,807,182.67
  5. Step 5: Solve for x
    x = 41,308,807,182.67/231,359.40
  6. Step 6: Final answer
    x = 178,548.21

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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.