Home / 231,214.38-319,071.78-129,241.86

Finding the Fourth Proportional to 231,214.38, 319,071.78 and 129,241.86

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Solution

The fourth proportional to 231,214.38, 319,071.78 and 129,241.86 is: 178,351.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,214.38 : 319,071.78 = 129,241.86 : x
  2. Step 2: Convert to fraction form
    231,214.38/319,071.78 = 129,241.86/x
  3. Step 3: Cross multiply
    231,214.38x = 319,071.78 × 129,241.86
  4. Step 4: Simplify right side
    231,214.38x = 41,237,430,320.71
  5. Step 5: Solve for x
    x = 41,237,430,320.71/231,214.38
  6. Step 6: Final answer
    x = 178,351.49

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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.