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Finding the Fourth Proportional to 309,600.87, 426,853.68 and 200,512.47

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Solution

The fourth proportional to 309,600.87, 426,853.68 and 200,512.47 is: 276,451.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,600.87 : 426,853.68 = 200,512.47 : x
  2. Step 2: Convert to fraction form
    309,600.87/426,853.68 = 200,512.47/x
  3. Step 3: Cross multiply
    309,600.87x = 426,853.68 × 200,512.47
  4. Step 4: Simplify right side
    309,600.87x = 85,589,485,705.39
  5. Step 5: Solve for x
    x = 85,589,485,705.39/309,600.87
  6. Step 6: Final answer
    x = 276,451.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.