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Finding the Third Proportional to 189,481.50 and 278,680.50

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Solution

The third proportional to 189,481.50 and 278,680.50 is: 409,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,481.50 : 278,680.50 = 278,680.50 : x
  2. Step 2: Convert to fraction form
    189,481.50/278,680.50 = 278,680.50/x
  3. Step 3: Cross multiply
    189,481.50x = 278,680.50 × 278,680.50
  4. Step 4: Simplify right side
    189,481.50x = 77,662,821,080.25
  5. Step 5: Solve for x
    x = 77,662,821,080.25/189,481.50
  6. Step 6: Final answer
    x = 409,870.20

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.