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Finding the Third Proportional to 100,485 and 218,442

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Solution

The third proportional to 100,485 and 218,442 is: 474,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,485 : 218,442 = 218,442 : x
  2. Step 2: Convert to fraction form
    100,485/218,442 = 218,442/x
  3. Step 3: Cross multiply
    100,485x = 218,442 × 218,442
  4. Step 4: Simplify right side
    100,485x = 47,716,907,364
  5. Step 5: Solve for x
    x = 47,716,907,364/100,485
  6. Step 6: Final answer
    x = 474,865.97

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.