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Finding the Fourth Proportional to 311,512.28, 467,261.70 and 86,866.73

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Solution

The fourth proportional to 311,512.28, 467,261.70 and 86,866.73 is: 130,298.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,512.28 : 467,261.70 = 86,866.73 : x
  2. Step 2: Convert to fraction form
    311,512.28/467,261.70 = 86,866.73/x
  3. Step 3: Cross multiply
    311,512.28x = 467,261.70 × 86,866.73
  4. Step 4: Simplify right side
    311,512.28x = 40,589,493,596.93
  5. Step 5: Solve for x
    x = 40,589,493,596.93/311,512.28
  6. Step 6: Final answer
    x = 130,298.22

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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.