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Finding the Fourth Proportional to 251,269.20, 376,903.80 and 82,789.20

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Solution

The fourth proportional to 251,269.20, 376,903.80 and 82,789.20 is: 124,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,269.20 : 376,903.80 = 82,789.20 : x
  2. Step 2: Convert to fraction form
    251,269.20/376,903.80 = 82,789.20/x
  3. Step 3: Cross multiply
    251,269.20x = 376,903.80 × 82,789.20
  4. Step 4: Simplify right side
    251,269.20x = 31,203,564,078.96
  5. Step 5: Solve for x
    x = 31,203,564,078.96/251,269.20
  6. Step 6: Final answer
    x = 124,183.80

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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.