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Finding the Fourth Proportional to 392,041.53, 541,006.83 and 219,945.15

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Solution

The fourth proportional to 392,041.53, 541,006.83 and 219,945.15 is: 303,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,041.53 : 541,006.83 = 219,945.15 : x
  2. Step 2: Convert to fraction form
    392,041.53/541,006.83 = 219,945.15/x
  3. Step 3: Cross multiply
    392,041.53x = 541,006.83 × 219,945.15
  4. Step 4: Simplify right side
    392,041.53x = 118,991,828,375.37
  5. Step 5: Solve for x
    x = 118,991,828,375.37/392,041.53
  6. Step 6: Final answer
    x = 303,518.43

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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.