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Finding the Fourth Proportional to 323,865.59, 485,147.78 and 161,269.79

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Solution

The fourth proportional to 323,865.59, 485,147.78 and 161,269.79 is: 241,580.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,865.59 : 485,147.78 = 161,269.79 : x
  2. Step 2: Convert to fraction form
    323,865.59/485,147.78 = 161,269.79/x
  3. Step 3: Cross multiply
    323,865.59x = 485,147.78 × 161,269.79
  4. Step 4: Simplify right side
    323,865.59x = 78,239,677,367.48
  5. Step 5: Solve for x
    x = 78,239,677,367.48/323,865.59
  6. Step 6: Final answer
    x = 241,580.71

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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.