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Finding the Fourth Proportional to 393,676.20, 543,404.50 and 264,571.52

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Solution

The fourth proportional to 393,676.20, 543,404.50 and 264,571.52 is: 365,196.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,676.20 : 543,404.50 = 264,571.52 : x
  2. Step 2: Convert to fraction form
    393,676.20/543,404.50 = 264,571.52/x
  3. Step 3: Cross multiply
    393,676.20x = 543,404.50 × 264,571.52
  4. Step 4: Simplify right side
    393,676.20x = 143,769,351,161.39
  5. Step 5: Solve for x
    x = 143,769,351,161.39/393,676.20
  6. Step 6: Final answer
    x = 365,196.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.