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Finding the Fourth Proportional to 192,512.78, 288,818.37 and 74,152.34

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Solution

The fourth proportional to 192,512.78, 288,818.37 and 74,152.34 is: 111,247.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,512.78 : 288,818.37 = 74,152.34 : x
  2. Step 2: Convert to fraction form
    192,512.78/288,818.37 = 74,152.34/x
  3. Step 3: Cross multiply
    192,512.78x = 288,818.37 × 74,152.34
  4. Step 4: Simplify right side
    192,512.78x = 21,416,556,526.39
  5. Step 5: Solve for x
    x = 21,416,556,526.39/192,512.78
  6. Step 6: Final answer
    x = 111,247.46

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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.