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Finding the Fourth Proportional to 481,281.56, 721,679.34 and 281,661.92

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Solution

The fourth proportional to 481,281.56, 721,679.34 and 281,661.92 is: 422,350.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,281.56 : 721,679.34 = 281,661.92 : x
  2. Step 2: Convert to fraction form
    481,281.56/721,679.34 = 281,661.92/x
  3. Step 3: Cross multiply
    481,281.56x = 721,679.34 × 281,661.92
  4. Step 4: Simplify right side
    481,281.56x = 203,269,588,528.73
  5. Step 5: Solve for x
    x = 203,269,588,528.73/481,281.56
  6. Step 6: Final answer
    x = 422,350.67

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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.