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Finding the Fourth Proportional to 276,948.60, 415,422.90 and 259,452.60

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Solution

The fourth proportional to 276,948.60, 415,422.90 and 259,452.60 is: 389,178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,948.60 : 415,422.90 = 259,452.60 : x
  2. Step 2: Convert to fraction form
    276,948.60/415,422.90 = 259,452.60/x
  3. Step 3: Cross multiply
    276,948.60x = 415,422.90 × 259,452.60
  4. Step 4: Simplify right side
    276,948.60x = 107,782,551,504.54
  5. Step 5: Solve for x
    x = 107,782,551,504.54/276,948.60
  6. Step 6: Final answer
    x = 389,178.90

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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.