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Finding the Fourth Proportional to 217,745.28, 300,486.24 and 122,249.76

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Solution

The fourth proportional to 217,745.28, 300,486.24 and 122,249.76 is: 168,703.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,745.28 : 300,486.24 = 122,249.76 : x
  2. Step 2: Convert to fraction form
    217,745.28/300,486.24 = 122,249.76/x
  3. Step 3: Cross multiply
    217,745.28x = 300,486.24 × 122,249.76
  4. Step 4: Simplify right side
    217,745.28x = 36,734,370,723.30
  5. Step 5: Solve for x
    x = 36,734,370,723.30/217,745.28
  6. Step 6: Final answer
    x = 168,703.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.