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Finding the Fourth Proportional to 321,309.52, 443,454.96 and 185,318.08

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Solution

The fourth proportional to 321,309.52, 443,454.96 and 185,318.08 is: 255,766.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,309.52 : 443,454.96 = 185,318.08 : x
  2. Step 2: Convert to fraction form
    321,309.52/443,454.96 = 185,318.08/x
  3. Step 3: Cross multiply
    321,309.52x = 443,454.96 × 185,318.08
  4. Step 4: Simplify right side
    321,309.52x = 82,180,221,753.68
  5. Step 5: Solve for x
    x = 82,180,221,753.68/321,309.52
  6. Step 6: Final answer
    x = 255,766.53

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1.5x scale

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.