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Finding the Third Proportional to 103,554 and 211,455

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Solution

The third proportional to 103,554 and 211,455 is: 431,786.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,554 : 211,455 = 211,455 : x
  2. Step 2: Convert to fraction form
    103,554/211,455 = 211,455/x
  3. Step 3: Cross multiply
    103,554x = 211,455 × 211,455
  4. Step 4: Simplify right side
    103,554x = 44,713,217,025
  5. Step 5: Solve for x
    x = 44,713,217,025/103,554
  6. Step 6: Final answer
    x = 431,786.48

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.