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Finding the Fourth Proportional to 397,729.73, 548,861.32 and 218,881.73

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Solution

The fourth proportional to 397,729.73, 548,861.32 and 218,881.73 is: 302,053.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,729.73 : 548,861.32 = 218,881.73 : x
  2. Step 2: Convert to fraction form
    397,729.73/548,861.32 = 218,881.73/x
  3. Step 3: Cross multiply
    397,729.73x = 548,861.32 × 218,881.73
  4. Step 4: Simplify right side
    397,729.73x = 120,135,715,251.68
  5. Step 5: Solve for x
    x = 120,135,715,251.68/397,729.73
  6. Step 6: Final answer
    x = 302,053.65

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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.