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Finding the Fourth Proportional to 378,792.72, 568,515.24 and 154,278

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Solution

The fourth proportional to 378,792.72, 568,515.24 and 154,278 is: 231,549.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,792.72 : 568,515.24 = 154,278 : x
  2. Step 2: Convert to fraction form
    378,792.72/568,515.24 = 154,278/x
  3. Step 3: Cross multiply
    378,792.72x = 568,515.24 × 154,278
  4. Step 4: Simplify right side
    378,792.72x = 87,709,394,196.72
  5. Step 5: Solve for x
    x = 87,709,394,196.72/378,792.72
  6. Step 6: Final answer
    x = 231,549.84

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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.