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Finding the Fourth Proportional to 276,867.60, 415,301.40 and 274,243.20

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Solution

The fourth proportional to 276,867.60, 415,301.40 and 274,243.20 is: 411,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,867.60 : 415,301.40 = 274,243.20 : x
  2. Step 2: Convert to fraction form
    276,867.60/415,301.40 = 274,243.20/x
  3. Step 3: Cross multiply
    276,867.60x = 415,301.40 × 274,243.20
  4. Step 4: Simplify right side
    276,867.60x = 113,893,584,900.48
  5. Step 5: Solve for x
    x = 113,893,584,900.48/276,867.60
  6. Step 6: Final answer
    x = 411,364.80

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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.