Home / 457,231.05-686,289.24-220,739.67

Finding the Fourth Proportional to 457,231.05, 686,289.24 and 220,739.67

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Solution

The fourth proportional to 457,231.05, 686,289.24 and 220,739.67 is: 331,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,231.05 : 686,289.24 = 220,739.67 : x
  2. Step 2: Convert to fraction form
    457,231.05/686,289.24 = 220,739.67/x
  3. Step 3: Cross multiply
    457,231.05x = 686,289.24 × 220,739.67
  4. Step 4: Simplify right side
    457,231.05x = 151,491,260,362.15
  5. Step 5: Solve for x
    x = 151,491,260,362.15/457,231.05
  6. Step 6: Final answer
    x = 331,323.21

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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.