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Finding the Fourth Proportional to 321,879.11, 443,884.60 and 192,796.97

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Solution

The fourth proportional to 321,879.11, 443,884.60 and 192,796.97 is: 265,874.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,879.11 : 443,884.60 = 192,796.97 : x
  2. Step 2: Convert to fraction form
    321,879.11/443,884.60 = 192,796.97/x
  3. Step 3: Cross multiply
    321,879.11x = 443,884.60 × 192,796.97
  4. Step 4: Simplify right side
    321,879.11x = 85,579,605,909.66
  5. Step 5: Solve for x
    x = 85,579,605,909.66/321,879.11
  6. Step 6: Final answer
    x = 265,874.99

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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.