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Finding the Third Proportional to 212,195 and 306,871

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Solution

The third proportional to 212,195 and 306,871 is: 443,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,195 : 306,871 = 306,871 : x
  2. Step 2: Convert to fraction form
    212,195/306,871 = 306,871/x
  3. Step 3: Cross multiply
    212,195x = 306,871 × 306,871
  4. Step 4: Simplify right side
    212,195x = 94,169,810,641
  5. Step 5: Solve for x
    x = 94,169,810,641/212,195
  6. Step 6: Final answer
    x = 443,789.02

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.