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Finding the Fourth Proportional to 262,896.80, 394,604.40 and 129,927.20

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Solution

The fourth proportional to 262,896.80, 394,604.40 and 129,927.20 is: 195,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,896.80 : 394,604.40 = 129,927.20 : x
  2. Step 2: Convert to fraction form
    262,896.80/394,604.40 = 129,927.20/x
  3. Step 3: Cross multiply
    262,896.80x = 394,604.40 × 129,927.20
  4. Step 4: Simplify right side
    262,896.80x = 51,269,844,799.68
  5. Step 5: Solve for x
    x = 51,269,844,799.68/262,896.80
  6. Step 6: Final answer
    x = 195,018.90

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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.