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Finding the Fourth Proportional to 246,912.72, 340,767.21 and 139,489.67

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Solution

The fourth proportional to 246,912.72, 340,767.21 and 139,489.67 is: 192,511.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,912.72 : 340,767.21 = 139,489.67 : x
  2. Step 2: Convert to fraction form
    246,912.72/340,767.21 = 139,489.67/x
  3. Step 3: Cross multiply
    246,912.72x = 340,767.21 × 139,489.67
  4. Step 4: Simplify right side
    246,912.72x = 47,533,504,972.27
  5. Step 5: Solve for x
    x = 47,533,504,972.27/246,912.72
  6. Step 6: Final answer
    x = 192,511.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.