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Finding the Third Proportional to 104,128 and 215,636

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Solution

The third proportional to 104,128 and 215,636 is: 446,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,128 : 215,636 = 215,636 : x
  2. Step 2: Convert to fraction form
    104,128/215,636 = 215,636/x
  3. Step 3: Cross multiply
    104,128x = 215,636 × 215,636
  4. Step 4: Simplify right side
    104,128x = 46,498,884,496
  5. Step 5: Solve for x
    x = 46,498,884,496/104,128
  6. Step 6: Final answer
    x = 446,555.05

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.