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Finding the Third Proportional to 278,721 and 366,241.50

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Solution

The third proportional to 278,721 and 366,241.50 is: 481,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,721 : 366,241.50 = 366,241.50 : x
  2. Step 2: Convert to fraction form
    278,721/366,241.50 = 366,241.50/x
  3. Step 3: Cross multiply
    278,721x = 366,241.50 × 366,241.50
  4. Step 4: Simplify right side
    278,721x = 134,132,836,322.25
  5. Step 5: Solve for x
    x = 134,132,836,322.25/278,721
  6. Step 6: Final answer
    x = 481,244.10

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.