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Finding the Fourth Proportional to 279,797.68, 419,778.47 and 90,254.44

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Solution

The fourth proportional to 279,797.68, 419,778.47 and 90,254.44 is: 135,408.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,797.68 : 419,778.47 = 90,254.44 : x
  2. Step 2: Convert to fraction form
    279,797.68/419,778.47 = 90,254.44/x
  3. Step 3: Cross multiply
    279,797.68x = 419,778.47 × 90,254.44
  4. Step 4: Simplify right side
    279,797.68x = 37,886,870,733.91
  5. Step 5: Solve for x
    x = 37,886,870,733.91/279,797.68
  6. Step 6: Final answer
    x = 135,408.09

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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.