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Finding the Third Proportional to 74,491 and 162,909

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Solution

The third proportional to 74,491 and 162,909 is: 356,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,491 : 162,909 = 162,909 : x
  2. Step 2: Convert to fraction form
    74,491/162,909 = 162,909/x
  3. Step 3: Cross multiply
    74,491x = 162,909 × 162,909
  4. Step 4: Simplify right side
    74,491x = 26,539,342,281
  5. Step 5: Solve for x
    x = 26,539,342,281/74,491
  6. Step 6: Final answer
    x = 356,275.82

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.