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Finding the Fourth Proportional to 342,183.20, 513,121.20 and 131,751.20

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Solution

The fourth proportional to 342,183.20, 513,121.20 and 131,751.20 is: 197,567.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,183.20 : 513,121.20 = 131,751.20 : x
  2. Step 2: Convert to fraction form
    342,183.20/513,121.20 = 131,751.20/x
  3. Step 3: Cross multiply
    342,183.20x = 513,121.20 × 131,751.20
  4. Step 4: Simplify right side
    342,183.20x = 67,604,333,845.44
  5. Step 5: Solve for x
    x = 67,604,333,845.44/342,183.20
  6. Step 6: Final answer
    x = 197,567.66

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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.