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Finding the Fourth Proportional to 279,421.95, 419,162.91 and 119,514.49

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Solution

The fourth proportional to 279,421.95, 419,162.91 and 119,514.49 is: 179,284.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,421.95 : 419,162.91 = 119,514.49 : x
  2. Step 2: Convert to fraction form
    279,421.95/419,162.91 = 119,514.49/x
  3. Step 3: Cross multiply
    279,421.95x = 419,162.91 × 119,514.49
  4. Step 4: Simplify right side
    279,421.95x = 50,096,040,815.84
  5. Step 5: Solve for x
    x = 50,096,040,815.84/279,421.95
  6. Step 6: Final answer
    x = 179,284.56

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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.