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Finding the Fourth Proportional to 192,380.33, 288,679.22 and 103,631.69

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Solution

The fourth proportional to 192,380.33, 288,679.22 and 103,631.69 is: 155,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,380.33 : 288,679.22 = 103,631.69 : x
  2. Step 2: Convert to fraction form
    192,380.33/288,679.22 = 103,631.69/x
  3. Step 3: Cross multiply
    192,380.33x = 288,679.22 × 103,631.69
  4. Step 4: Simplify right side
    192,380.33x = 29,916,315,436.48
  5. Step 5: Solve for x
    x = 29,916,315,436.48/192,380.33
  6. Step 6: Final answer
    x = 155,506.10

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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.