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Finding the Third Proportional to 218,243 and 469,687

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Solution

The third proportional to 218,243 and 469,687 is: 1,010,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,243 : 469,687 = 469,687 : x
  2. Step 2: Convert to fraction form
    218,243/469,687 = 469,687/x
  3. Step 3: Cross multiply
    218,243x = 469,687 × 469,687
  4. Step 4: Simplify right side
    218,243x = 220,605,877,969
  5. Step 5: Solve for x
    x = 220,605,877,969/218,243
  6. Step 6: Final answer
    x = 1,010,826.82

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.