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Finding the Third Proportional to 221,716.50 and 338,110.50

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Solution

The third proportional to 221,716.50 and 338,110.50 is: 515,607.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,716.50 : 338,110.50 = 338,110.50 : x
  2. Step 2: Convert to fraction form
    221,716.50/338,110.50 = 338,110.50/x
  3. Step 3: Cross multiply
    221,716.50x = 338,110.50 × 338,110.50
  4. Step 4: Simplify right side
    221,716.50x = 114,318,710,210.25
  5. Step 5: Solve for x
    x = 114,318,710,210.25/221,716.50
  6. Step 6: Final answer
    x = 515,607.59

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.