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Finding the Third Proportional to 218,387 and 463,018

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Solution

The third proportional to 218,387 and 463,018 is: 981,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,387 : 463,018 = 463,018 : x
  2. Step 2: Convert to fraction form
    218,387/463,018 = 463,018/x
  3. Step 3: Cross multiply
    218,387x = 463,018 × 463,018
  4. Step 4: Simplify right side
    218,387x = 214,385,668,324
  5. Step 5: Solve for x
    x = 214,385,668,324/218,387
  6. Step 6: Final answer
    x = 981,677.79

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.