Home / 263,028.40-394,283.40-129,929.20

Finding the Fourth Proportional to 263,028.40, 394,283.40 and 129,929.20

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Solution

The fourth proportional to 263,028.40, 394,283.40 and 129,929.20 is: 194,765.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,028.40 : 394,283.40 = 129,929.20 : x
  2. Step 2: Convert to fraction form
    263,028.40/394,283.40 = 129,929.20/x
  3. Step 3: Cross multiply
    263,028.40x = 394,283.40 × 129,929.20
  4. Step 4: Simplify right side
    263,028.40x = 51,228,926,735.28
  5. Step 5: Solve for x
    x = 51,228,926,735.28/263,028.40
  6. Step 6: Final answer
    x = 194,765.76

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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.