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Finding the Fourth Proportional to 323,540.30, 485,311.64 and 98,899.86

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Solution

The fourth proportional to 323,540.30, 485,311.64 and 98,899.86 is: 148,350.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,540.30 : 485,311.64 = 98,899.86 : x
  2. Step 2: Convert to fraction form
    323,540.30/485,311.64 = 98,899.86/x
  3. Step 3: Cross multiply
    323,540.30x = 485,311.64 × 98,899.86
  4. Step 4: Simplify right side
    323,540.30x = 47,997,253,499.62
  5. Step 5: Solve for x
    x = 47,997,253,499.62/323,540.30
  6. Step 6: Final answer
    x = 148,350.16

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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.