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Finding the Fourth Proportional to 378,311.90, 568,110.62 and 252,758.96

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Solution

The fourth proportional to 378,311.90, 568,110.62 and 252,758.96 is: 379,567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,311.90 : 568,110.62 = 252,758.96 : x
  2. Step 2: Convert to fraction form
    378,311.90/568,110.62 = 252,758.96/x
  3. Step 3: Cross multiply
    378,311.90x = 568,110.62 × 252,758.96
  4. Step 4: Simplify right side
    378,311.90x = 143,595,049,476.16
  5. Step 5: Solve for x
    x = 143,595,049,476.16/378,311.90
  6. Step 6: Final answer
    x = 379,567.89

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1.5x scale

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.