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Finding the Fourth Proportional to 192,659.39, 288,917.39 and 66,264.15

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Solution

The fourth proportional to 192,659.39, 288,917.39 and 66,264.15 is: 99,371.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,659.39 : 288,917.39 = 66,264.15 : x
  2. Step 2: Convert to fraction form
    192,659.39/288,917.39 = 66,264.15/x
  3. Step 3: Cross multiply
    192,659.39x = 288,917.39 × 66,264.15
  4. Step 4: Simplify right side
    192,659.39x = 19,144,865,268.57
  5. Step 5: Solve for x
    x = 19,144,865,268.57/192,659.39
  6. Step 6: Final answer
    x = 99,371.57

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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.