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Finding the Fourth Proportional to 193,352.36, 290,042.34 and 80,919.36

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Solution

The fourth proportional to 193,352.36, 290,042.34 and 80,919.36 is: 121,384.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,352.36 : 290,042.34 = 80,919.36 : x
  2. Step 2: Convert to fraction form
    193,352.36/290,042.34 = 80,919.36/x
  3. Step 3: Cross multiply
    193,352.36x = 290,042.34 × 80,919.36
  4. Step 4: Simplify right side
    193,352.36x = 23,470,040,525.70
  5. Step 5: Solve for x
    x = 23,470,040,525.70/193,352.36
  6. Step 6: Final answer
    x = 121,384.82

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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.