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Finding the Fourth Proportional to 400,976.93, 601,472.99 and 131,105.18

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Solution

The fourth proportional to 400,976.93, 601,472.99 and 131,105.18 is: 196,660.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,976.93 : 601,472.99 = 131,105.18 : x
  2. Step 2: Convert to fraction form
    400,976.93/601,472.99 = 131,105.18/x
  3. Step 3: Cross multiply
    400,976.93x = 601,472.99 × 131,105.18
  4. Step 4: Simplify right side
    400,976.93x = 78,856,226,450.53
  5. Step 5: Solve for x
    x = 78,856,226,450.53/400,976.93
  6. Step 6: Final answer
    x = 196,660.26

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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.