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Finding the Third Proportional to 71,449 and 155,209

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Solution

The third proportional to 71,449 and 155,209 is: 337,161.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,449 : 155,209 = 155,209 : x
  2. Step 2: Convert to fraction form
    71,449/155,209 = 155,209/x
  3. Step 3: Cross multiply
    71,449x = 155,209 × 155,209
  4. Step 4: Simplify right side
    71,449x = 24,089,833,681
  5. Step 5: Solve for x
    x = 24,089,833,681/71,449
  6. Step 6: Final answer
    x = 337,161.24

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.