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Finding the Fourth Proportional to 215,765.28, 323,647.46 and 57,993.74

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Solution

The fourth proportional to 215,765.28, 323,647.46 and 57,993.74 is: 86,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,765.28 : 323,647.46 = 57,993.74 : x
  2. Step 2: Convert to fraction form
    215,765.28/323,647.46 = 57,993.74/x
  3. Step 3: Cross multiply
    215,765.28x = 323,647.46 × 57,993.74
  4. Step 4: Simplify right side
    215,765.28x = 18,769,524,738.69
  5. Step 5: Solve for x
    x = 18,769,524,738.69/215,765.28
  6. Step 6: Final answer
    x = 86,990.48

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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.