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Finding the Fourth Proportional to 279,618.66, 419,494.50 and 90,096.96

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Solution

The fourth proportional to 279,618.66, 419,494.50 and 90,096.96 is: 135,166.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,618.66 : 419,494.50 = 90,096.96 : x
  2. Step 2: Convert to fraction form
    279,618.66/419,494.50 = 90,096.96/x
  3. Step 3: Cross multiply
    279,618.66x = 419,494.50 × 90,096.96
  4. Step 4: Simplify right side
    279,618.66x = 37,795,179,186.72
  5. Step 5: Solve for x
    x = 37,795,179,186.72/279,618.66
  6. Step 6: Final answer
    x = 135,166.87

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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.