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Finding the Fourth Proportional to 279,617.67, 419,367.58 and 90,095.29

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Solution

The fourth proportional to 279,617.67, 419,367.58 and 90,095.29 is: 135,123.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,617.67 : 419,367.58 = 90,095.29 : x
  2. Step 2: Convert to fraction form
    279,617.67/419,367.58 = 90,095.29/x
  3. Step 3: Cross multiply
    279,617.67x = 419,367.58 × 90,095.29
  4. Step 4: Simplify right side
    279,617.67x = 37,783,042,463.04
  5. Step 5: Solve for x
    x = 37,783,042,463.04/279,617.67
  6. Step 6: Final answer
    x = 135,123.94

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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.