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Finding the Fourth Proportional to 329,679.40, 494,519.10 and 223,391.20

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Solution

The fourth proportional to 329,679.40, 494,519.10 and 223,391.20 is: 335,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,679.40 : 494,519.10 = 223,391.20 : x
  2. Step 2: Convert to fraction form
    329,679.40/494,519.10 = 223,391.20/x
  3. Step 3: Cross multiply
    329,679.40x = 494,519.10 × 223,391.20
  4. Step 4: Simplify right side
    329,679.40x = 110,471,215,171.92
  5. Step 5: Solve for x
    x = 110,471,215,171.92/329,679.40
  6. Step 6: Final answer
    x = 335,086.80

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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.