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Finding the Fourth Proportional to 192,614.70, 288,961.46 and 66,238.54

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Solution

The fourth proportional to 192,614.70, 288,961.46 and 66,238.54 is: 99,371.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,614.70 : 288,961.46 = 66,238.54 : x
  2. Step 2: Convert to fraction form
    192,614.70/288,961.46 = 66,238.54/x
  3. Step 3: Cross multiply
    192,614.70x = 288,961.46 × 66,238.54
  4. Step 4: Simplify right side
    192,614.70x = 19,140,385,226.67
  5. Step 5: Solve for x
    x = 19,140,385,226.67/192,614.70
  6. Step 6: Final answer
    x = 99,371.36

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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.