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Finding the Third Proportional to 287,617.50 and 627,145.50

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Solution

The third proportional to 287,617.50 and 627,145.50 is: 1,367,481.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,617.50 : 627,145.50 = 627,145.50 : x
  2. Step 2: Convert to fraction form
    287,617.50/627,145.50 = 627,145.50/x
  3. Step 3: Cross multiply
    287,617.50x = 627,145.50 × 627,145.50
  4. Step 4: Simplify right side
    287,617.50x = 393,311,478,170.25
  5. Step 5: Solve for x
    x = 393,311,478,170.25/287,617.50
  6. Step 6: Final answer
    x = 1,367,481.04

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.