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Finding the Third Proportional to 135,715.50 and 211,329

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Solution

The third proportional to 135,715.50 and 211,329 is: 329,070.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,715.50 : 211,329 = 211,329 : x
  2. Step 2: Convert to fraction form
    135,715.50/211,329 = 211,329/x
  3. Step 3: Cross multiply
    135,715.50x = 211,329 × 211,329
  4. Step 4: Simplify right side
    135,715.50x = 44,659,946,241
  5. Step 5: Solve for x
    x = 44,659,946,241/135,715.50
  6. Step 6: Final answer
    x = 329,070.34

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.