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Finding the Fourth Proportional to 342,138.92, 472,132.66 and 189,168.24

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Solution

The fourth proportional to 342,138.92, 472,132.66 and 189,168.24 is: 261,041.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,138.92 : 472,132.66 = 189,168.24 : x
  2. Step 2: Convert to fraction form
    342,138.92/472,132.66 = 189,168.24/x
  3. Step 3: Cross multiply
    342,138.92x = 472,132.66 × 189,168.24
  4. Step 4: Simplify right side
    342,138.92x = 89,312,504,338.72
  5. Step 5: Solve for x
    x = 89,312,504,338.72/342,138.92
  6. Step 6: Final answer
    x = 261,041.64

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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.