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Finding the Fourth Proportional to 321,634.16, 443,709.60 and 200,805.38

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Solution

The fourth proportional to 321,634.16, 443,709.60 and 200,805.38 is: 277,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,634.16 : 443,709.60 = 200,805.38 : x
  2. Step 2: Convert to fraction form
    321,634.16/443,709.60 = 200,805.38/x
  3. Step 3: Cross multiply
    321,634.16x = 443,709.60 × 200,805.38
  4. Step 4: Simplify right side
    321,634.16x = 89,099,274,837.65
  5. Step 5: Solve for x
    x = 89,099,274,837.65/321,634.16
  6. Step 6: Final answer
    x = 277,020.56

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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.