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Finding the Fourth Proportional to 276,843.60, 388,630.80 and 276,843.60

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Solution

The fourth proportional to 276,843.60, 388,630.80 and 276,843.60 is: 388,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,843.60 : 388,630.80 = 276,843.60 : x
  2. Step 2: Convert to fraction form
    276,843.60/388,630.80 = 276,843.60/x
  3. Step 3: Cross multiply
    276,843.60x = 388,630.80 × 276,843.60
  4. Step 4: Simplify right side
    276,843.60x = 107,589,949,742.88
  5. Step 5: Solve for x
    x = 107,589,949,742.88/276,843.60
  6. Step 6: Final answer
    x = 388,630.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.