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Finding the Fourth Proportional to 321,633.75, 443,564.04 and 200,786.22

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Solution

The fourth proportional to 321,633.75, 443,564.04 and 200,786.22 is: 276,903.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,633.75 : 443,564.04 = 200,786.22 : x
  2. Step 2: Convert to fraction form
    321,633.75/443,564.04 = 200,786.22/x
  3. Step 3: Cross multiply
    321,633.75x = 443,564.04 × 200,786.22
  4. Step 4: Simplify right side
    321,633.75x = 89,061,546,919.53
  5. Step 5: Solve for x
    x = 89,061,546,919.53/321,633.75
  6. Step 6: Final answer
    x = 276,903.61

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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.