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Finding the Fourth Proportional to 192,656.39, 288,912.89 and 66,261.15

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Solution

The fourth proportional to 192,656.39, 288,912.89 and 66,261.15 is: 99,367.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,656.39 : 288,912.89 = 66,261.15 : x
  2. Step 2: Convert to fraction form
    192,656.39/288,912.89 = 66,261.15/x
  3. Step 3: Cross multiply
    192,656.39x = 288,912.89 × 66,261.15
  4. Step 4: Simplify right side
    192,656.39x = 19,143,700,506.88
  5. Step 5: Solve for x
    x = 19,143,700,506.88/192,656.39
  6. Step 6: Final answer
    x = 99,367.07

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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.