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Finding the Third Proportional to 140,215.50 and 306,679.50

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Solution

The third proportional to 140,215.50 and 306,679.50 is: 670,769.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,215.50 : 306,679.50 = 306,679.50 : x
  2. Step 2: Convert to fraction form
    140,215.50/306,679.50 = 306,679.50/x
  3. Step 3: Cross multiply
    140,215.50x = 306,679.50 × 306,679.50
  4. Step 4: Simplify right side
    140,215.50x = 94,052,315,720.25
  5. Step 5: Solve for x
    x = 94,052,315,720.25/140,215.50
  6. Step 6: Final answer
    x = 670,769.75

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.