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Finding the Fourth Proportional to 392,469.15, 541,613.07 and 220,424.34

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Solution

The fourth proportional to 392,469.15, 541,613.07 and 220,424.34 is: 304,188.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,469.15 : 541,613.07 = 220,424.34 : x
  2. Step 2: Convert to fraction form
    392,469.15/541,613.07 = 220,424.34/x
  3. Step 3: Cross multiply
    392,469.15x = 541,613.07 × 220,424.34
  4. Step 4: Simplify right side
    392,469.15x = 119,384,703,490.12
  5. Step 5: Solve for x
    x = 119,384,703,490.12/392,469.15
  6. Step 6: Final answer
    x = 304,188.76

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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.