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Finding the Fourth Proportional to 192,609.90, 288,892.98 and 74,271.33

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Solution

The fourth proportional to 192,609.90, 288,892.98 and 74,271.33 is: 111,398.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,609.90 : 288,892.98 = 74,271.33 : x
  2. Step 2: Convert to fraction form
    192,609.90/288,892.98 = 74,271.33/x
  3. Step 3: Cross multiply
    192,609.90x = 288,892.98 × 74,271.33
  4. Step 4: Simplify right side
    192,609.90x = 21,456,465,852.26
  5. Step 5: Solve for x
    x = 21,456,465,852.26/192,609.90
  6. Step 6: Final answer
    x = 111,398.56

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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.