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Finding the Fourth Proportional to 257,910.60, 386,865.90 and 226,806.60

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Solution

The fourth proportional to 257,910.60, 386,865.90 and 226,806.60 is: 340,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,910.60 : 386,865.90 = 226,806.60 : x
  2. Step 2: Convert to fraction form
    257,910.60/386,865.90 = 226,806.60/x
  3. Step 3: Cross multiply
    257,910.60x = 386,865.90 × 226,806.60
  4. Step 4: Simplify right side
    257,910.60x = 87,743,739,434.94
  5. Step 5: Solve for x
    x = 87,743,739,434.94/257,910.60
  6. Step 6: Final answer
    x = 340,209.90

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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.