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Finding the Fourth Proportional to 279,081.40, 418,563.54 and 92,049.08

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Solution

The fourth proportional to 279,081.40, 418,563.54 and 92,049.08 is: 138,054.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,081.40 : 418,563.54 = 92,049.08 : x
  2. Step 2: Convert to fraction form
    279,081.40/418,563.54 = 92,049.08/x
  3. Step 3: Cross multiply
    279,081.40x = 418,563.54 × 92,049.08
  4. Step 4: Simplify right side
    279,081.40x = 38,528,388,778.54
  5. Step 5: Solve for x
    x = 38,528,388,778.54/279,081.40
  6. Step 6: Final answer
    x = 138,054.31

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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.