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Finding the Third Proportional to 137,922 and 210,891

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Solution

The third proportional to 137,922 and 210,891 is: 322,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,922 : 210,891 = 210,891 : x
  2. Step 2: Convert to fraction form
    137,922/210,891 = 210,891/x
  3. Step 3: Cross multiply
    137,922x = 210,891 × 210,891
  4. Step 4: Simplify right side
    137,922x = 44,475,013,881
  5. Step 5: Solve for x
    x = 44,475,013,881/137,922
  6. Step 6: Final answer
    x = 322,464.97

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.