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Finding the Fourth Proportional to 203,662.35, 305,370.81 and 91,322.24

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Solution

The fourth proportional to 203,662.35, 305,370.81 and 91,322.24 is: 136,928.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,662.35 : 305,370.81 = 91,322.24 : x
  2. Step 2: Convert to fraction form
    203,662.35/305,370.81 = 91,322.24/x
  3. Step 3: Cross multiply
    203,662.35x = 305,370.81 × 91,322.24
  4. Step 4: Simplify right side
    203,662.35x = 27,887,144,872.96
  5. Step 5: Solve for x
    x = 27,887,144,872.96/203,662.35
  6. Step 6: Final answer
    x = 136,928.33

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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.