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Finding the Third Proportional to 317,740 and 465,918

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Solution

The third proportional to 317,740 and 465,918 is: 683,198.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,740 : 465,918 = 465,918 : x
  2. Step 2: Convert to fraction form
    317,740/465,918 = 465,918/x
  3. Step 3: Cross multiply
    317,740x = 465,918 × 465,918
  4. Step 4: Simplify right side
    317,740x = 217,079,582,724
  5. Step 5: Solve for x
    x = 217,079,582,724/317,740
  6. Step 6: Final answer
    x = 683,198.79

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.