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Finding the Fourth Proportional to 424,067.78, 635,188.20 and 199,091.09

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Solution

The fourth proportional to 424,067.78, 635,188.20 and 199,091.09 is: 298,207.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,067.78 : 635,188.20 = 199,091.09 : x
  2. Step 2: Convert to fraction form
    424,067.78/635,188.20 = 199,091.09/x
  3. Step 3: Cross multiply
    424,067.78x = 635,188.20 × 199,091.09
  4. Step 4: Simplify right side
    424,067.78x = 126,460,307,917.20
  5. Step 5: Solve for x
    x = 126,460,307,917.20/424,067.78
  6. Step 6: Final answer
    x = 298,207.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.