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Finding the Third Proportional to 210,408 and 454,512

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Solution

The third proportional to 210,408 and 454,512 is: 981,812.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,408 : 454,512 = 454,512 : x
  2. Step 2: Convert to fraction form
    210,408/454,512 = 454,512/x
  3. Step 3: Cross multiply
    210,408x = 454,512 × 454,512
  4. Step 4: Simplify right side
    210,408x = 206,581,158,144
  5. Step 5: Solve for x
    x = 206,581,158,144/210,408
  6. Step 6: Final answer
    x = 981,812.28

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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.