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Finding the Fourth Proportional to 276,883.60, 415,325.40 and 274,259.20

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Solution

The fourth proportional to 276,883.60, 415,325.40 and 274,259.20 is: 411,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,883.60 : 415,325.40 = 274,259.20 : x
  2. Step 2: Convert to fraction form
    276,883.60/415,325.40 = 274,259.20/x
  3. Step 3: Cross multiply
    276,883.60x = 415,325.40 × 274,259.20
  4. Step 4: Simplify right side
    276,883.60x = 113,906,811,943.68
  5. Step 5: Solve for x
    x = 113,906,811,943.68/276,883.60
  6. Step 6: Final answer
    x = 411,388.80

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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.