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Finding the Third Proportional to 103,581 and 221,910

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Solution

The third proportional to 103,581 and 221,910 is: 475,415.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,581 : 221,910 = 221,910 : x
  2. Step 2: Convert to fraction form
    103,581/221,910 = 221,910/x
  3. Step 3: Cross multiply
    103,581x = 221,910 × 221,910
  4. Step 4: Simplify right side
    103,581x = 49,244,048,100
  5. Step 5: Solve for x
    x = 49,244,048,100/103,581
  6. Step 6: Final answer
    x = 475,415.84

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.