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Finding the Fourth Proportional to 276,118.68, 414,178.56 and 76,439.64

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Solution

The fourth proportional to 276,118.68, 414,178.56 and 76,439.64 is: 114,659.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,118.68 : 414,178.56 = 76,439.64 : x
  2. Step 2: Convert to fraction form
    276,118.68/414,178.56 = 76,439.64/x
  3. Step 3: Cross multiply
    276,118.68x = 414,178.56 × 76,439.64
  4. Step 4: Simplify right side
    276,118.68x = 31,659,660,022.12
  5. Step 5: Solve for x
    x = 31,659,660,022.12/276,118.68
  6. Step 6: Final answer
    x = 114,659.61

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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.