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Finding the Fourth Proportional to 538,806.20, 807,863.70 and 223,388.60

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Solution

The fourth proportional to 538,806.20, 807,863.70 and 223,388.60 is: 334,939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,806.20 : 807,863.70 = 223,388.60 : x
  2. Step 2: Convert to fraction form
    538,806.20/807,863.70 = 223,388.60/x
  3. Step 3: Cross multiply
    538,806.20x = 807,863.70 × 223,388.60
  4. Step 4: Simplify right side
    538,806.20x = 180,467,540,933.82
  5. Step 5: Solve for x
    x = 180,467,540,933.82/538,806.20
  6. Step 6: Final answer
    x = 334,939.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.