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Finding the Third Proportional to 99,153 and 217,989

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Solution

The third proportional to 99,153 and 217,989 is: 479,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,153 : 217,989 = 217,989 : x
  2. Step 2: Convert to fraction form
    99,153/217,989 = 217,989/x
  3. Step 3: Cross multiply
    99,153x = 217,989 × 217,989
  4. Step 4: Simplify right side
    99,153x = 47,519,204,121
  5. Step 5: Solve for x
    x = 47,519,204,121/99,153
  6. Step 6: Final answer
    x = 479,251.30

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These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.