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Finding the Fourth Proportional to 321,182.39, 443,439.68 and 206,512.53

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Solution

The fourth proportional to 321,182.39, 443,439.68 and 206,512.53 is: 285,121.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,182.39 : 443,439.68 = 206,512.53 : x
  2. Step 2: Convert to fraction form
    321,182.39/443,439.68 = 206,512.53/x
  3. Step 3: Cross multiply
    321,182.39x = 443,439.68 × 206,512.53
  4. Step 4: Simplify right side
    321,182.39x = 91,575,850,219.19
  5. Step 5: Solve for x
    x = 91,575,850,219.19/321,182.39
  6. Step 6: Final answer
    x = 285,121.02

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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.