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Finding the Third Proportional to 71,515 and 154,272

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Solution

The third proportional to 71,515 and 154,272 is: 332,795.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,515 : 154,272 = 154,272 : x
  2. Step 2: Convert to fraction form
    71,515/154,272 = 154,272/x
  3. Step 3: Cross multiply
    71,515x = 154,272 × 154,272
  4. Step 4: Simplify right side
    71,515x = 23,799,849,984
  5. Step 5: Solve for x
    x = 23,799,849,984/71,515
  6. Step 6: Final answer
    x = 332,795.22

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.