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Finding the Fourth Proportional to 342,131.64, 472,121.43 and 189,157.83

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Solution

The fourth proportional to 342,131.64, 472,121.43 and 189,157.83 is: 261,026.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,131.64 : 472,121.43 = 189,157.83 : x
  2. Step 2: Convert to fraction form
    342,131.64/472,121.43 = 189,157.83/x
  3. Step 3: Cross multiply
    342,131.64x = 472,121.43 × 189,157.83
  4. Step 4: Simplify right side
    342,131.64x = 89,305,465,195.30
  5. Step 5: Solve for x
    x = 89,305,465,195.30/342,131.64
  6. Step 6: Final answer
    x = 261,026.62

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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.