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Finding the Third Proportional to 135,226 and 210,209

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Solution

The third proportional to 135,226 and 210,209 is: 326,770.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,226 : 210,209 = 210,209 : x
  2. Step 2: Convert to fraction form
    135,226/210,209 = 210,209/x
  3. Step 3: Cross multiply
    135,226x = 210,209 × 210,209
  4. Step 4: Simplify right side
    135,226x = 44,187,823,681
  5. Step 5: Solve for x
    x = 44,187,823,681/135,226
  6. Step 6: Final answer
    x = 326,770.17

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.