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Finding the Fourth Proportional to 217,738.73, 300,471.73 and 122,249.45

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Solution

The fourth proportional to 217,738.73, 300,471.73 and 122,249.45 is: 168,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,738.73 : 300,471.73 = 122,249.45 : x
  2. Step 2: Convert to fraction form
    217,738.73/300,471.73 = 122,249.45/x
  3. Step 3: Cross multiply
    217,738.73x = 300,471.73 × 122,249.45
  4. Step 4: Simplify right side
    217,738.73x = 36,732,503,733.05
  5. Step 5: Solve for x
    x = 36,732,503,733.05/217,738.73
  6. Step 6: Final answer
    x = 168,699.91

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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.