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Finding the Fourth Proportional to 329,842.80, 494,764.20 and 262,920.60

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Solution

The fourth proportional to 329,842.80, 494,764.20 and 262,920.60 is: 394,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,842.80 : 494,764.20 = 262,920.60 : x
  2. Step 2: Convert to fraction form
    329,842.80/494,764.20 = 262,920.60/x
  3. Step 3: Cross multiply
    329,842.80x = 494,764.20 × 262,920.60
  4. Step 4: Simplify right side
    329,842.80x = 130,083,700,322.52
  5. Step 5: Solve for x
    x = 130,083,700,322.52/329,842.80
  6. Step 6: Final answer
    x = 394,380.90

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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.