Home / 231,392.91-319,321.29-129,417.96

Finding the Fourth Proportional to 231,392.91, 319,321.29 and 129,417.96

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Solution

The fourth proportional to 231,392.91, 319,321.29 and 129,417.96 is: 178,596.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,392.91 : 319,321.29 = 129,417.96 : x
  2. Step 2: Convert to fraction form
    231,392.91/319,321.29 = 129,417.96/x
  3. Step 3: Cross multiply
    231,392.91x = 319,321.29 × 129,417.96
  4. Step 4: Simplify right side
    231,392.91x = 41,325,909,936.37
  5. Step 5: Solve for x
    x = 41,325,909,936.37/231,392.91
  6. Step 6: Final answer
    x = 178,596.27

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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.