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Finding the Fourth Proportional to 226,648.43, 312,785.43 and 131,136.67

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Solution

The fourth proportional to 226,648.43, 312,785.43 and 131,136.67 is: 180,974.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,648.43 : 312,785.43 = 131,136.67 : x
  2. Step 2: Convert to fraction form
    226,648.43/312,785.43 = 131,136.67/x
  3. Step 3: Cross multiply
    226,648.43x = 312,785.43 × 131,136.67
  4. Step 4: Simplify right side
    226,648.43x = 41,017,638,150.79
  5. Step 5: Solve for x
    x = 41,017,638,150.79/226,648.43
  6. Step 6: Final answer
    x = 180,974.73

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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.