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Finding the Fourth Proportional to 323,489.39, 485,321.43 and 98,843.67

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Solution

The fourth proportional to 323,489.39, 485,321.43 and 98,843.67 is: 148,292.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,489.39 : 485,321.43 = 98,843.67 : x
  2. Step 2: Convert to fraction form
    323,489.39/485,321.43 = 98,843.67/x
  3. Step 3: Cross multiply
    323,489.39x = 485,321.43 × 98,843.67
  4. Step 4: Simplify right side
    323,489.39x = 47,970,951,270.85
  5. Step 5: Solve for x
    x = 47,970,951,270.85/323,489.39
  6. Step 6: Final answer
    x = 148,292.19

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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.