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Finding the Fourth Proportional to 321,593.70, 443,826.57 and 178,399.88

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Solution

The fourth proportional to 321,593.70, 443,826.57 and 178,399.88 is: 246,206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,593.70 : 443,826.57 = 178,399.88 : x
  2. Step 2: Convert to fraction form
    321,593.70/443,826.57 = 178,399.88/x
  3. Step 3: Cross multiply
    321,593.70x = 443,826.57 × 178,399.88
  4. Step 4: Simplify right side
    321,593.70x = 79,178,604,609.68
  5. Step 5: Solve for x
    x = 79,178,604,609.68/321,593.70
  6. Step 6: Final answer
    x = 246,206.95

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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.