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Finding the Fourth Proportional to 402,751.86, 603,998.67 and 132,819.39

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Solution

The fourth proportional to 402,751.86, 603,998.67 and 132,819.39 is: 199,186.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,751.86 : 603,998.67 = 132,819.39 : x
  2. Step 2: Convert to fraction form
    402,751.86/603,998.67 = 132,819.39/x
  3. Step 3: Cross multiply
    402,751.86x = 603,998.67 × 132,819.39
  4. Step 4: Simplify right side
    402,751.86x = 80,222,734,910.21
  5. Step 5: Solve for x
    x = 80,222,734,910.21/402,751.86
  6. Step 6: Final answer
    x = 199,186.50

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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.