Home / 231,590.30-319,600.35-129,614.90

Finding the Fourth Proportional to 231,590.30, 319,600.35 and 129,614.90

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Solution

The fourth proportional to 231,590.30, 319,600.35 and 129,614.90 is: 178,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,590.30 : 319,600.35 = 129,614.90 : x
  2. Step 2: Convert to fraction form
    231,590.30/319,600.35 = 129,614.90/x
  3. Step 3: Cross multiply
    231,590.30x = 319,600.35 × 129,614.90
  4. Step 4: Simplify right side
    231,590.30x = 41,424,967,405.22
  5. Step 5: Solve for x
    x = 41,424,967,405.22/231,590.30
  6. Step 6: Final answer
    x = 178,871.77

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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.