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Finding the Third Proportional to 100,728 and 219,435

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Solution

The third proportional to 100,728 and 219,435 is: 478,037.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,728 : 219,435 = 219,435 : x
  2. Step 2: Convert to fraction form
    100,728/219,435 = 219,435/x
  3. Step 3: Cross multiply
    100,728x = 219,435 × 219,435
  4. Step 4: Simplify right side
    100,728x = 48,151,719,225
  5. Step 5: Solve for x
    x = 48,151,719,225/100,728
  6. Step 6: Final answer
    x = 478,037.08

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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.