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Finding the Fourth Proportional to 276,708.30, 415,062.53 and 213,620.52

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Solution

The fourth proportional to 276,708.30, 415,062.53 and 213,620.52 is: 320,430.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,708.30 : 415,062.53 = 213,620.52 : x
  2. Step 2: Convert to fraction form
    276,708.30/415,062.53 = 213,620.52/x
  3. Step 3: Cross multiply
    276,708.30x = 415,062.53 × 213,620.52
  4. Step 4: Simplify right side
    276,708.30x = 88,665,873,905.05
  5. Step 5: Solve for x
    x = 88,665,873,905.05/276,708.30
  6. Step 6: Final answer
    x = 320,430.85

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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.