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Finding the Fourth Proportional to 311,513.28, 467,263.20 and 86,867.73

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Solution

The fourth proportional to 311,513.28, 467,263.20 and 86,867.73 is: 130,299.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,513.28 : 467,263.20 = 86,867.73 : x
  2. Step 2: Convert to fraction form
    311,513.28/467,263.20 = 86,867.73/x
  3. Step 3: Cross multiply
    311,513.28x = 467,263.20 × 86,867.73
  4. Step 4: Simplify right side
    311,513.28x = 40,590,093,496.54
  5. Step 5: Solve for x
    x = 40,590,093,496.54/311,513.28
  6. Step 6: Final answer
    x = 130,299.72

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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.