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Finding the Fourth Proportional to 263,330.40, 394,736.40 and 130,231.20

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Solution

The fourth proportional to 263,330.40, 394,736.40 and 130,231.20 is: 195,218.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,330.40 : 394,736.40 = 130,231.20 : x
  2. Step 2: Convert to fraction form
    263,330.40/394,736.40 = 130,231.20/x
  3. Step 3: Cross multiply
    263,330.40x = 394,736.40 × 130,231.20
  4. Step 4: Simplify right side
    263,330.40x = 51,406,995,055.68
  5. Step 5: Solve for x
    x = 51,406,995,055.68/263,330.40
  6. Step 6: Final answer
    x = 195,218.61

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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.