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Finding the Third Proportional to 137,368 and 212,586

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Solution

The third proportional to 137,368 and 212,586 is: 328,990.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,368 : 212,586 = 212,586 : x
  2. Step 2: Convert to fraction form
    137,368/212,586 = 212,586/x
  3. Step 3: Cross multiply
    137,368x = 212,586 × 212,586
  4. Step 4: Simplify right side
    137,368x = 45,192,807,396
  5. Step 5: Solve for x
    x = 45,192,807,396/137,368
  6. Step 6: Final answer
    x = 328,990.79

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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.