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Finding the Fourth Proportional to 276,672.80, 415,009.20 and 272,525.60

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Solution

The fourth proportional to 276,672.80, 415,009.20 and 272,525.60 is: 408,788.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,672.80 : 415,009.20 = 272,525.60 : x
  2. Step 2: Convert to fraction form
    276,672.80/415,009.20 = 272,525.60/x
  3. Step 3: Cross multiply
    276,672.80x = 415,009.20 × 272,525.60
  4. Step 4: Simplify right side
    276,672.80x = 113,100,631,235.52
  5. Step 5: Solve for x
    x = 113,100,631,235.52/276,672.80
  6. Step 6: Final answer
    x = 408,788.40

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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.