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Finding the Third Proportional to 137,922 and 210,897

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Solution

The third proportional to 137,922 and 210,897 is: 322,483.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,922 : 210,897 = 210,897 : x
  2. Step 2: Convert to fraction form
    137,922/210,897 = 210,897/x
  3. Step 3: Cross multiply
    137,922x = 210,897 × 210,897
  4. Step 4: Simplify right side
    137,922x = 44,477,544,609
  5. Step 5: Solve for x
    x = 44,477,544,609/137,922
  6. Step 6: Final answer
    x = 322,483.32

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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.