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Finding the Fourth Proportional to 192,213.70, 288,212.56 and 79,818.30

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Solution

The fourth proportional to 192,213.70, 288,212.56 and 79,818.30 is: 119,682.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,213.70 : 288,212.56 = 79,818.30 : x
  2. Step 2: Convert to fraction form
    192,213.70/288,212.56 = 79,818.30/x
  3. Step 3: Cross multiply
    192,213.70x = 288,212.56 × 79,818.30
  4. Step 4: Simplify right side
    192,213.70x = 23,004,636,577.85
  5. Step 5: Solve for x
    x = 23,004,636,577.85/192,213.70
  6. Step 6: Final answer
    x = 119,682.61

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1.5x scale

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.