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Finding the Fourth Proportional to 378,855.60, 568,542.60 and 210,375.60

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Solution

The fourth proportional to 378,855.60, 568,542.60 and 210,375.60 is: 315,707.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,855.60 : 568,542.60 = 210,375.60 : x
  2. Step 2: Convert to fraction form
    378,855.60/568,542.60 = 210,375.60/x
  3. Step 3: Cross multiply
    378,855.60x = 568,542.60 × 210,375.60
  4. Step 4: Simplify right side
    378,855.60x = 119,607,490,600.56
  5. Step 5: Solve for x
    x = 119,607,490,600.56/378,855.60
  6. Step 6: Final answer
    x = 315,707.33

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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.