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Finding the Third Proportional to 208,072 and 313,965

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Solution

The third proportional to 208,072 and 313,965 is: 473,749.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,072 : 313,965 = 313,965 : x
  2. Step 2: Convert to fraction form
    208,072/313,965 = 313,965/x
  3. Step 3: Cross multiply
    208,072x = 313,965 × 313,965
  4. Step 4: Simplify right side
    208,072x = 98,574,021,225
  5. Step 5: Solve for x
    x = 98,574,021,225/208,072
  6. Step 6: Final answer
    x = 473,749.57

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Why These Related Problems?

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