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Finding the Fourth Proportional to 279,341.81, 419,016.56 and 79,662.22

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Solution

The fourth proportional to 279,341.81, 419,016.56 and 79,662.22 is: 119,494.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,341.81 : 419,016.56 = 79,662.22 : x
  2. Step 2: Convert to fraction form
    279,341.81/419,016.56 = 79,662.22/x
  3. Step 3: Cross multiply
    279,341.81x = 419,016.56 × 79,662.22
  4. Step 4: Simplify right side
    279,341.81x = 33,379,789,724.49
  5. Step 5: Solve for x
    x = 33,379,789,724.49/279,341.81
  6. Step 6: Final answer
    x = 119,494.43

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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.