Home / 262,890.20-394,335.30-221,418.20

Finding the Fourth Proportional to 262,890.20, 394,335.30 and 221,418.20

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Solution

The fourth proportional to 262,890.20, 394,335.30 and 221,418.20 is: 332,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,890.20 : 394,335.30 = 221,418.20 : x
  2. Step 2: Convert to fraction form
    262,890.20/394,335.30 = 221,418.20/x
  3. Step 3: Cross multiply
    262,890.20x = 394,335.30 × 221,418.20
  4. Step 4: Simplify right side
    262,890.20x = 87,313,012,322.46
  5. Step 5: Solve for x
    x = 87,313,012,322.46/262,890.20
  6. Step 6: Final answer
    x = 332,127.30

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1.5x scale

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.