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Finding the Fourth Proportional to 392,522.32, 541,679.25 and 220,416.34

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Solution

The fourth proportional to 392,522.32, 541,679.25 and 220,416.34 is: 304,173.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,522.32 : 541,679.25 = 220,416.34 : x
  2. Step 2: Convert to fraction form
    392,522.32/541,679.25 = 220,416.34/x
  3. Step 3: Cross multiply
    392,522.32x = 541,679.25 × 220,416.34
  4. Step 4: Simplify right side
    392,522.32x = 119,394,957,738.95
  5. Step 5: Solve for x
    x = 119,394,957,738.95/392,522.32
  6. Step 6: Final answer
    x = 304,173.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.