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Finding the Fourth Proportional to 478,183.49, 659,878.78 and 263,324.72

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Solution

The fourth proportional to 478,183.49, 659,878.78 and 263,324.72 is: 363,380.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,183.49 : 659,878.78 = 263,324.72 : x
  2. Step 2: Convert to fraction form
    478,183.49/659,878.78 = 263,324.72/x
  3. Step 3: Cross multiply
    478,183.49x = 659,878.78 × 263,324.72
  4. Step 4: Simplify right side
    478,183.49x = 173,762,394,977.44
  5. Step 5: Solve for x
    x = 173,762,394,977.44/478,183.49
  6. Step 6: Final answer
    x = 363,380.16

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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.