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Finding the Third Proportional to 318,183 and 445,990.50

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Solution

The third proportional to 318,183 and 445,990.50 is: 625,135.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,183 : 445,990.50 = 445,990.50 : x
  2. Step 2: Convert to fraction form
    318,183/445,990.50 = 445,990.50/x
  3. Step 3: Cross multiply
    318,183x = 445,990.50 × 445,990.50
  4. Step 4: Simplify right side
    318,183x = 198,907,526,090.25
  5. Step 5: Solve for x
    x = 198,907,526,090.25/318,183
  6. Step 6: Final answer
    x = 625,135.62

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.