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Finding the Fourth Proportional to 205,658.31, 307,930.91 and 134,403.39

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Solution

The fourth proportional to 205,658.31, 307,930.91 and 134,403.39 is: 201,241.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,658.31 : 307,930.91 = 134,403.39 : x
  2. Step 2: Convert to fraction form
    205,658.31/307,930.91 = 134,403.39/x
  3. Step 3: Cross multiply
    205,658.31x = 307,930.91 × 134,403.39
  4. Step 4: Simplify right side
    205,658.31x = 41,386,957,517.77
  5. Step 5: Solve for x
    x = 41,386,957,517.77/205,658.31
  6. Step 6: Final answer
    x = 201,241.36

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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.