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Finding the Fourth Proportional to 321,530.80, 443,680.54 and 185,608.54

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Solution

The fourth proportional to 321,530.80, 443,680.54 and 185,608.54 is: 256,121.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,530.80 : 443,680.54 = 185,608.54 : x
  2. Step 2: Convert to fraction form
    321,530.80/443,680.54 = 185,608.54/x
  3. Step 3: Cross multiply
    321,530.80x = 443,680.54 × 185,608.54
  4. Step 4: Simplify right side
    321,530.80x = 82,350,895,919.04
  5. Step 5: Solve for x
    x = 82,350,895,919.04/321,530.80
  6. Step 6: Final answer
    x = 256,121.33

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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.