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Finding the Fourth Proportional to 279,135.08, 418,716.30 and 79,469.48

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Solution

The fourth proportional to 279,135.08, 418,716.30 and 79,469.48 is: 119,208.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,135.08 : 418,716.30 = 79,469.48 : x
  2. Step 2: Convert to fraction form
    279,135.08/418,716.30 = 79,469.48/x
  3. Step 3: Cross multiply
    279,135.08x = 418,716.30 × 79,469.48
  4. Step 4: Simplify right side
    279,135.08x = 33,275,166,628.52
  5. Step 5: Solve for x
    x = 33,275,166,628.52/279,135.08
  6. Step 6: Final answer
    x = 119,208.11

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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.