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Finding the Fourth Proportional to 321,608.45, 443,846.92 and 178,414.63

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Solution

The fourth proportional to 321,608.45, 443,846.92 and 178,414.63 is: 246,227.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,608.45 : 443,846.92 = 178,414.63 : x
  2. Step 2: Convert to fraction form
    321,608.45/443,846.92 = 178,414.63/x
  3. Step 3: Cross multiply
    321,608.45x = 443,846.92 × 178,414.63
  4. Step 4: Simplify right side
    321,608.45x = 79,188,781,789.21
  5. Step 5: Solve for x
    x = 79,188,781,789.21/321,608.45
  6. Step 6: Final answer
    x = 246,227.30

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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.