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Finding the Fourth Proportional to 279,147.39, 418,723.68 and 79,467.75

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Solution

The fourth proportional to 279,147.39, 418,723.68 and 79,467.75 is: 119,202.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,147.39 : 418,723.68 = 79,467.75 : x
  2. Step 2: Convert to fraction form
    279,147.39/418,723.68 = 79,467.75/x
  3. Step 3: Cross multiply
    279,147.39x = 418,723.68 × 79,467.75
  4. Step 4: Simplify right side
    279,147.39x = 33,275,028,721.32
  5. Step 5: Solve for x
    x = 33,275,028,721.32/279,147.39
  6. Step 6: Final answer
    x = 119,202.36

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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.