Home / 231,789.76-319,874.40-151,268.80

Finding the Fourth Proportional to 231,789.76, 319,874.40 and 151,268.80

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Solution

The fourth proportional to 231,789.76, 319,874.40 and 151,268.80 is: 208,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,789.76 : 319,874.40 = 151,268.80 : x
  2. Step 2: Convert to fraction form
    231,789.76/319,874.40 = 151,268.80/x
  3. Step 3: Cross multiply
    231,789.76x = 319,874.40 × 151,268.80
  4. Step 4: Simplify right side
    231,789.76x = 48,387,016,638.72
  5. Step 5: Solve for x
    x = 48,387,016,638.72/231,789.76
  6. Step 6: Final answer
    x = 208,753.90

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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.