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Finding the Fourth Proportional to 308,613.37, 463,116.90 and 131,120.38

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Solution

The fourth proportional to 308,613.37, 463,116.90 and 131,120.38 is: 196,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,613.37 : 463,116.90 = 131,120.38 : x
  2. Step 2: Convert to fraction form
    308,613.37/463,116.90 = 131,120.38/x
  3. Step 3: Cross multiply
    308,613.37x = 463,116.90 × 131,120.38
  4. Step 4: Simplify right side
    308,613.37x = 60,724,063,912.42
  5. Step 5: Solve for x
    x = 60,724,063,912.42/308,613.37
  6. Step 6: Final answer
    x = 196,764.20

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1.5x scale

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.