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Finding the Fourth Proportional to 395,911.70, 593,997.87 and 263,313.62

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Solution

The fourth proportional to 395,911.70, 593,997.87 and 263,313.62 is: 395,057.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,911.70 : 593,997.87 = 263,313.62 : x
  2. Step 2: Convert to fraction form
    395,911.70/593,997.87 = 263,313.62/x
  3. Step 3: Cross multiply
    395,911.70x = 593,997.87 × 263,313.62
  4. Step 4: Simplify right side
    395,911.70x = 156,407,729,421.99
  5. Step 5: Solve for x
    x = 156,407,729,421.99/395,911.70
  6. Step 6: Final answer
    x = 395,057.10

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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.