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Finding the Fourth Proportional to 301,211.11, 451,819.91 and 90,850.87

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Solution

The fourth proportional to 301,211.11, 451,819.91 and 90,850.87 is: 136,277.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,211.11 : 451,819.91 = 90,850.87 : x
  2. Step 2: Convert to fraction form
    301,211.11/451,819.91 = 90,850.87/x
  3. Step 3: Cross multiply
    301,211.11x = 451,819.91 × 90,850.87
  4. Step 4: Simplify right side
    301,211.11x = 41,048,231,906.82
  5. Step 5: Solve for x
    x = 41,048,231,906.82/301,211.11
  6. Step 6: Final answer
    x = 136,277.28

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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.