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Finding the Fourth Proportional to 308,785.20, 463,310.26 and 119,378.60

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Solution

The fourth proportional to 308,785.20, 463,310.26 and 119,378.60 is: 179,119.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,785.20 : 463,310.26 = 119,378.60 : x
  2. Step 2: Convert to fraction form
    308,785.20/463,310.26 = 119,378.60/x
  3. Step 3: Cross multiply
    308,785.20x = 463,310.26 × 119,378.60
  4. Step 4: Simplify right side
    308,785.20x = 55,309,330,204.44
  5. Step 5: Solve for x
    x = 55,309,330,204.44/308,785.20
  6. Step 6: Final answer
    x = 179,119.11

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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.