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Finding the Third Proportional to 208,708 and 317,052

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Solution

The third proportional to 208,708 and 317,052 is: 481,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,708 : 317,052 = 317,052 : x
  2. Step 2: Convert to fraction form
    208,708/317,052 = 317,052/x
  3. Step 3: Cross multiply
    208,708x = 317,052 × 317,052
  4. Step 4: Simplify right side
    208,708x = 100,521,970,704
  5. Step 5: Solve for x
    x = 100,521,970,704/208,708
  6. Step 6: Final answer
    x = 481,639.28

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.