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Finding the Third Proportional to 99,908 and 210,968

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Solution

The third proportional to 99,908 and 210,968 is: 445,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,908 : 210,968 = 210,968 : x
  2. Step 2: Convert to fraction form
    99,908/210,968 = 210,968/x
  3. Step 3: Cross multiply
    99,908x = 210,968 × 210,968
  4. Step 4: Simplify right side
    99,908x = 44,507,497,024
  5. Step 5: Solve for x
    x = 44,507,497,024/99,908
  6. Step 6: Final answer
    x = 445,484.82

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.