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Finding the Fourth Proportional to 378,145.80, 567,218.70 and 200,998.80

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Solution

The fourth proportional to 378,145.80, 567,218.70 and 200,998.80 is: 301,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,145.80 : 567,218.70 = 200,998.80 : x
  2. Step 2: Convert to fraction form
    378,145.80/567,218.70 = 200,998.80/x
  3. Step 3: Cross multiply
    378,145.80x = 567,218.70 × 200,998.80
  4. Step 4: Simplify right side
    378,145.80x = 114,010,278,037.56
  5. Step 5: Solve for x
    x = 114,010,278,037.56/378,145.80
  6. Step 6: Final answer
    x = 301,498.20

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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.