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Finding the Fourth Proportional to 231,716.77, 319,760.28 and 129,732.69

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Solution

The fourth proportional to 231,716.77, 319,760.28 and 129,732.69 is: 179,026.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,716.77 : 319,760.28 = 129,732.69 : x
  2. Step 2: Convert to fraction form
    231,716.77/319,760.28 = 129,732.69/x
  3. Step 3: Cross multiply
    231,716.77x = 319,760.28 × 129,732.69
  4. Step 4: Simplify right side
    231,716.77x = 41,483,361,279.55
  5. Step 5: Solve for x
    x = 41,483,361,279.55/231,716.77
  6. Step 6: Final answer
    x = 179,026.15

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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.