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Finding the Third Proportional to 137,930 and 210,904

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Solution

The third proportional to 137,930 and 210,904 is: 322,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,930 : 210,904 = 210,904 : x
  2. Step 2: Convert to fraction form
    137,930/210,904 = 210,904/x
  3. Step 3: Cross multiply
    137,930x = 210,904 × 210,904
  4. Step 4: Simplify right side
    137,930x = 44,480,497,216
  5. Step 5: Solve for x
    x = 44,480,497,216/137,930
  6. Step 6: Final answer
    x = 322,486.02

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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.