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Finding the Fourth Proportional to 279,179.10, 418,770.94 and 79,499.24

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Solution

The fourth proportional to 279,179.10, 418,770.94 and 79,499.24 is: 119,249.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,179.10 : 418,770.94 = 79,499.24 : x
  2. Step 2: Convert to fraction form
    279,179.10/418,770.94 = 79,499.24/x
  3. Step 3: Cross multiply
    279,179.10x = 418,770.94 × 79,499.24
  4. Step 4: Simplify right side
    279,179.10x = 33,291,971,464.09
  5. Step 5: Solve for x
    x = 33,291,971,464.09/279,179.10
  6. Step 6: Final answer
    x = 119,249.51

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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.