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Finding the Third Proportional to 221,012 and 339,909.50

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Solution

The third proportional to 221,012 and 339,909.50 is: 522,770.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,012 : 339,909.50 = 339,909.50 : x
  2. Step 2: Convert to fraction form
    221,012/339,909.50 = 339,909.50/x
  3. Step 3: Cross multiply
    221,012x = 339,909.50 × 339,909.50
  4. Step 4: Simplify right side
    221,012x = 115,538,468,190.25
  5. Step 5: Solve for x
    x = 115,538,468,190.25/221,012
  6. Step 6: Final answer
    x = 522,770.11

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.