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Finding the Third Proportional to 99,272 and 212,395

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Solution

The third proportional to 99,272 and 212,395 is: 454,424.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,272 : 212,395 = 212,395 : x
  2. Step 2: Convert to fraction form
    99,272/212,395 = 212,395/x
  3. Step 3: Cross multiply
    99,272x = 212,395 × 212,395
  4. Step 4: Simplify right side
    99,272x = 45,111,636,025
  5. Step 5: Solve for x
    x = 45,111,636,025/99,272
  6. Step 6: Final answer
    x = 454,424.57

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.