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Finding the Fourth Proportional to 323,842.20, 485,180.10 and 199,037.40

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Solution

The fourth proportional to 323,842.20, 485,180.10 and 199,037.40 is: 298,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,842.20 : 485,180.10 = 199,037.40 : x
  2. Step 2: Convert to fraction form
    323,842.20/485,180.10 = 199,037.40/x
  3. Step 3: Cross multiply
    323,842.20x = 485,180.10 × 199,037.40
  4. Step 4: Simplify right side
    323,842.20x = 96,568,985,635.74
  5. Step 5: Solve for x
    x = 96,568,985,635.74/323,842.20
  6. Step 6: Final answer
    x = 298,197.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.