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Finding the Fourth Proportional to 392,187.56, 541,212.10 and 220,109.54

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Solution

The fourth proportional to 392,187.56, 541,212.10 and 220,109.54 is: 303,747.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,187.56 : 541,212.10 = 220,109.54 : x
  2. Step 2: Convert to fraction form
    392,187.56/541,212.10 = 220,109.54/x
  3. Step 3: Cross multiply
    392,187.56x = 541,212.10 × 220,109.54
  4. Step 4: Simplify right side
    392,187.56x = 119,125,943,117.10
  5. Step 5: Solve for x
    x = 119,125,943,117.10/392,187.56
  6. Step 6: Final answer
    x = 303,747.38

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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.