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Finding the Third Proportional to 285,181.50 and 398,725.50

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Solution

The third proportional to 285,181.50 and 398,725.50 is: 557,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,181.50 : 398,725.50 = 398,725.50 : x
  2. Step 2: Convert to fraction form
    285,181.50/398,725.50 = 398,725.50/x
  3. Step 3: Cross multiply
    285,181.50x = 398,725.50 × 398,725.50
  4. Step 4: Simplify right side
    285,181.50x = 158,982,024,350.25
  5. Step 5: Solve for x
    x = 158,982,024,350.25/285,181.50
  6. Step 6: Final answer
    x = 557,476.64

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.