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Finding the Fourth Proportional to 263,272.40, 394,908.60 and 130,412.15

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Solution

The fourth proportional to 263,272.40, 394,908.60 and 130,412.15 is: 195,618.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,272.40 : 394,908.60 = 130,412.15 : x
  2. Step 2: Convert to fraction form
    263,272.40/394,908.60 = 130,412.15/x
  3. Step 3: Cross multiply
    263,272.40x = 394,908.60 × 130,412.15
  4. Step 4: Simplify right side
    263,272.40x = 51,500,879,579.49
  5. Step 5: Solve for x
    x = 51,500,879,579.49/263,272.40
  6. Step 6: Final answer
    x = 195,618.23

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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.