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Finding the Fourth Proportional to 356,091.20, 533,359.20 and 276,581.60

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Solution

The fourth proportional to 356,091.20, 533,359.20 and 276,581.60 is: 414,268.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,091.20 : 533,359.20 = 276,581.60 : x
  2. Step 2: Convert to fraction form
    356,091.20/533,359.20 = 276,581.60/x
  3. Step 3: Cross multiply
    356,091.20x = 533,359.20 × 276,581.60
  4. Step 4: Simplify right side
    356,091.20x = 147,517,340,910.72
  5. Step 5: Solve for x
    x = 147,517,340,910.72/356,091.20
  6. Step 6: Final answer
    x = 414,268.43

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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.