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Finding the Third Proportional to 307,840 and 481,200

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Solution

The third proportional to 307,840 and 481,200 is: 752,187.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,840 : 481,200 = 481,200 : x
  2. Step 2: Convert to fraction form
    307,840/481,200 = 481,200/x
  3. Step 3: Cross multiply
    307,840x = 481,200 × 481,200
  4. Step 4: Simplify right side
    307,840x = 231,553,440,000
  5. Step 5: Solve for x
    x = 231,553,440,000/307,840
  6. Step 6: Final answer
    x = 752,187.63

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.