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Finding the Fourth Proportional to 276,575.40, 414,863.10 and 272,638.80

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Solution

The fourth proportional to 276,575.40, 414,863.10 and 272,638.80 is: 408,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,575.40 : 414,863.10 = 272,638.80 : x
  2. Step 2: Convert to fraction form
    276,575.40/414,863.10 = 272,638.80/x
  3. Step 3: Cross multiply
    276,575.40x = 414,863.10 × 272,638.80
  4. Step 4: Simplify right side
    276,575.40x = 113,107,777,748.28
  5. Step 5: Solve for x
    x = 113,107,777,748.28/276,575.40
  6. Step 6: Final answer
    x = 408,958.20

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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.