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Finding the Third Proportional to 100,995 and 219,724

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Solution

The third proportional to 100,995 and 219,724 is: 478,029.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,995 : 219,724 = 219,724 : x
  2. Step 2: Convert to fraction form
    100,995/219,724 = 219,724/x
  3. Step 3: Cross multiply
    100,995x = 219,724 × 219,724
  4. Step 4: Simplify right side
    100,995x = 48,278,636,176
  5. Step 5: Solve for x
    x = 48,278,636,176/100,995
  6. Step 6: Final answer
    x = 478,029.96

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.