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Finding the Third Proportional to 100,820 and 220,936

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Solution

The third proportional to 100,820 and 220,936 is: 484,157.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,820 : 220,936 = 220,936 : x
  2. Step 2: Convert to fraction form
    100,820/220,936 = 220,936/x
  3. Step 3: Cross multiply
    100,820x = 220,936 × 220,936
  4. Step 4: Simplify right side
    100,820x = 48,812,716,096
  5. Step 5: Solve for x
    x = 48,812,716,096/100,820
  6. Step 6: Final answer
    x = 484,157.07

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.