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Finding the Third Proportional to 206,354.25 and 311,611.50

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Solution

The third proportional to 206,354.25 and 311,611.50 is: 470,558.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,354.25 : 311,611.50 = 311,611.50 : x
  2. Step 2: Convert to fraction form
    206,354.25/311,611.50 = 311,611.50/x
  3. Step 3: Cross multiply
    206,354.25x = 311,611.50 × 311,611.50
  4. Step 4: Simplify right side
    206,354.25x = 97,101,726,932.25
  5. Step 5: Solve for x
    x = 97,101,726,932.25/206,354.25
  6. Step 6: Final answer
    x = 470,558.41

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.