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Finding the Fourth Proportional to 538,808.20, 807,866.70 and 223,390.60

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Solution

The fourth proportional to 538,808.20, 807,866.70 and 223,390.60 is: 334,942.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,808.20 : 807,866.70 = 223,390.60 : x
  2. Step 2: Convert to fraction form
    538,808.20/807,866.70 = 223,390.60/x
  3. Step 3: Cross multiply
    538,808.20x = 807,866.70 × 223,390.60
  4. Step 4: Simplify right side
    538,808.20x = 180,469,826,833.02
  5. Step 5: Solve for x
    x = 180,469,826,833.02/538,808.20
  6. Step 6: Final answer
    x = 334,942.61

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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.