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Finding the Third Proportional to 202,178 and 313,927

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Solution

The third proportional to 202,178 and 313,927 is: 487,442.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,178 : 313,927 = 313,927 : x
  2. Step 2: Convert to fraction form
    202,178/313,927 = 313,927/x
  3. Step 3: Cross multiply
    202,178x = 313,927 × 313,927
  4. Step 4: Simplify right side
    202,178x = 98,550,161,329
  5. Step 5: Solve for x
    x = 98,550,161,329/202,178
  6. Step 6: Final answer
    x = 487,442.56

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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.