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Finding the Fourth Proportional to 323,847.20, 485,187.60 and 199,042.40

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Solution

The fourth proportional to 323,847.20, 485,187.60 and 199,042.40 is: 298,205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,847.20 : 485,187.60 = 199,042.40 : x
  2. Step 2: Convert to fraction form
    323,847.20/485,187.60 = 199,042.40/x
  3. Step 3: Cross multiply
    323,847.20x = 485,187.60 × 199,042.40
  4. Step 4: Simplify right side
    323,847.20x = 96,572,904,354.24
  5. Step 5: Solve for x
    x = 96,572,904,354.24/323,847.20
  6. Step 6: Final answer
    x = 298,205.15

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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.