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Finding the Fourth Proportional to 192,290.88, 288,216 and 73,901.28

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Solution

The fourth proportional to 192,290.88, 288,216 and 73,901.28 is: 110,767.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,290.88 : 288,216 = 73,901.28 : x
  2. Step 2: Convert to fraction form
    192,290.88/288,216 = 73,901.28/x
  3. Step 3: Cross multiply
    192,290.88x = 288,216 × 73,901.28
  4. Step 4: Simplify right side
    192,290.88x = 21,299,531,316.48
  5. Step 5: Solve for x
    x = 21,299,531,316.48/192,290.88
  6. Step 6: Final answer
    x = 110,767.25

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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.