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Finding the Fourth Proportional to 451,843.20, 677,764.80 and 136,259.10

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Solution

The fourth proportional to 451,843.20, 677,764.80 and 136,259.10 is: 204,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,843.20 : 677,764.80 = 136,259.10 : x
  2. Step 2: Convert to fraction form
    451,843.20/677,764.80 = 136,259.10/x
  3. Step 3: Cross multiply
    451,843.20x = 677,764.80 × 136,259.10
  4. Step 4: Simplify right side
    451,843.20x = 92,351,621,659.68
  5. Step 5: Solve for x
    x = 92,351,621,659.68/451,843.20
  6. Step 6: Final answer
    x = 204,388.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.