Home / 231,441.36-319,374.01-129,449.15

Finding the Fourth Proportional to 231,441.36, 319,374.01 and 129,449.15

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Solution

The fourth proportional to 231,441.36, 319,374.01 and 129,449.15 is: 178,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,441.36 : 319,374.01 = 129,449.15 : x
  2. Step 2: Convert to fraction form
    231,441.36/319,374.01 = 129,449.15/x
  3. Step 3: Cross multiply
    231,441.36x = 319,374.01 × 129,449.15
  4. Step 4: Simplify right side
    231,441.36x = 41,342,694,126.59
  5. Step 5: Solve for x
    x = 41,342,694,126.59/231,441.36
  6. Step 6: Final answer
    x = 178,631.40

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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.