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Finding the Third Proportional to 202,218 and 313,965

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Solution

The third proportional to 202,218 and 313,965 is: 487,464.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,218 : 313,965 = 313,965 : x
  2. Step 2: Convert to fraction form
    202,218/313,965 = 313,965/x
  3. Step 3: Cross multiply
    202,218x = 313,965 × 313,965
  4. Step 4: Simplify right side
    202,218x = 98,574,021,225
  5. Step 5: Solve for x
    x = 98,574,021,225/202,218
  6. Step 6: Final answer
    x = 487,464.13

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.