Home / 231,341.62-319,249.23-129,365.91

Finding the Fourth Proportional to 231,341.62, 319,249.23 and 129,365.91

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Solution

The fourth proportional to 231,341.62, 319,249.23 and 129,365.91 is: 178,523.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,341.62 : 319,249.23 = 129,365.91 : x
  2. Step 2: Convert to fraction form
    231,341.62/319,249.23 = 129,365.91/x
  3. Step 3: Cross multiply
    231,341.62x = 319,249.23 × 129,365.91
  4. Step 4: Simplify right side
    231,341.62x = 41,299,967,398.31
  5. Step 5: Solve for x
    x = 41,299,967,398.31/231,341.62
  6. Step 6: Final answer
    x = 178,523.72

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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.