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Finding the Third Proportional to 100,295 and 208,991

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Solution

The third proportional to 100,295 and 208,991 is: 435,487.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,295 : 208,991 = 208,991 : x
  2. Step 2: Convert to fraction form
    100,295/208,991 = 208,991/x
  3. Step 3: Cross multiply
    100,295x = 208,991 × 208,991
  4. Step 4: Simplify right side
    100,295x = 43,677,238,081
  5. Step 5: Solve for x
    x = 43,677,238,081/100,295
  6. Step 6: Final answer
    x = 435,487.69

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.