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Finding the Third Proportional to 208,038 and 313,930

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Solution

The third proportional to 208,038 and 313,930 is: 473,721.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,038 : 313,930 = 313,930 : x
  2. Step 2: Convert to fraction form
    208,038/313,930 = 313,930/x
  3. Step 3: Cross multiply
    208,038x = 313,930 × 313,930
  4. Step 4: Simplify right side
    208,038x = 98,552,044,900
  5. Step 5: Solve for x
    x = 98,552,044,900/208,038
  6. Step 6: Final answer
    x = 473,721.36

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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.