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Finding the Fourth Proportional to 323,867.20, 485,217.60 and 199,062.40

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Solution

The fourth proportional to 323,867.20, 485,217.60 and 199,062.40 is: 298,235.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,867.20 : 485,217.60 = 199,062.40 : x
  2. Step 2: Convert to fraction form
    323,867.20/485,217.60 = 199,062.40/x
  3. Step 3: Cross multiply
    323,867.20x = 485,217.60 × 199,062.40
  4. Step 4: Simplify right side
    323,867.20x = 96,588,579,978.24
  5. Step 5: Solve for x
    x = 96,588,579,978.24/323,867.20
  6. Step 6: Final answer
    x = 298,235.14

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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.