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Finding the Fourth Proportional to 321,418.18, 443,553.60 and 185,450.50

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Solution

The fourth proportional to 321,418.18, 443,553.60 and 185,450.50 is: 255,919.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,418.18 : 443,553.60 = 185,450.50 : x
  2. Step 2: Convert to fraction form
    321,418.18/443,553.60 = 185,450.50/x
  3. Step 3: Cross multiply
    321,418.18x = 443,553.60 × 185,450.50
  4. Step 4: Simplify right side
    321,418.18x = 82,257,236,896.80
  5. Step 5: Solve for x
    x = 82,257,236,896.80/321,418.18
  6. Step 6: Final answer
    x = 255,919.68

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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.