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Finding the Third Proportional to 137,322 and 212,517

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Solution

The third proportional to 137,322 and 212,517 is: 328,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,322 : 212,517 = 212,517 : x
  2. Step 2: Convert to fraction form
    137,322/212,517 = 212,517/x
  3. Step 3: Cross multiply
    137,322x = 212,517 × 212,517
  4. Step 4: Simplify right side
    137,322x = 45,163,475,289
  5. Step 5: Solve for x
    x = 45,163,475,289/137,322
  6. Step 6: Final answer
    x = 328,887.40

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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.