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Finding the Third Proportional to 99,186 and 215,862

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Solution

The third proportional to 99,186 and 215,862 is: 469,788.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,186 : 215,862 = 215,862 : x
  2. Step 2: Convert to fraction form
    99,186/215,862 = 215,862/x
  3. Step 3: Cross multiply
    99,186x = 215,862 × 215,862
  4. Step 4: Simplify right side
    99,186x = 46,596,403,044
  5. Step 5: Solve for x
    x = 46,596,403,044/99,186
  6. Step 6: Final answer
    x = 469,788.11

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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.