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Finding the Fourth Proportional to 262,898.87, 394,375.91 and 129,651.03

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Solution

The fourth proportional to 262,898.87, 394,375.91 and 129,651.03 is: 194,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,898.87 : 394,375.91 = 129,651.03 : x
  2. Step 2: Convert to fraction form
    262,898.87/394,375.91 = 129,651.03/x
  3. Step 3: Cross multiply
    262,898.87x = 394,375.91 × 129,651.03
  4. Step 4: Simplify right side
    262,898.87x = 51,131,242,290.43
  5. Step 5: Solve for x
    x = 51,131,242,290.43/262,898.87
  6. Step 6: Final answer
    x = 194,490.16

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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.