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Finding the Fourth Proportional to 392,326.38, 541,410.75 and 220,220.28

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Solution

The fourth proportional to 392,326.38, 541,410.75 and 220,220.28 is: 303,904.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,326.38 : 541,410.75 = 220,220.28 : x
  2. Step 2: Convert to fraction form
    392,326.38/541,410.75 = 220,220.28/x
  3. Step 3: Cross multiply
    392,326.38x = 541,410.75 × 220,220.28
  4. Step 4: Simplify right side
    392,326.38x = 119,229,626,960.01
  5. Step 5: Solve for x
    x = 119,229,626,960.01/392,326.38
  6. Step 6: Final answer
    x = 303,904.18

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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.