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Finding the Third Proportional to 3,918,169.75 and 9,219,216

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Solution

The third proportional to 3,918,169.75 and 9,219,216 is: 21,692,256.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918,169.75 : 9,219,216 = 9,219,216 : x
  2. Step 2: Convert to fraction form
    3,918,169.75/9,219,216 = 9,219,216/x
  3. Step 3: Cross multiply
    3,918,169.75x = 9,219,216 × 9,219,216
  4. Step 4: Simplify right side
    3,918,169.75x = 84,993,943,654,656
  5. Step 5: Solve for x
    x = 84,993,943,654,656/3,918,169.75
  6. Step 6: Final answer
    x = 21,692,256.61

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.