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Finding the Fourth Proportional to 397,960.02, 549,171.87 and 225,891.72

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Solution

The fourth proportional to 397,960.02, 549,171.87 and 225,891.72 is: 311,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,960.02 : 549,171.87 = 225,891.72 : x
  2. Step 2: Convert to fraction form
    397,960.02/549,171.87 = 225,891.72/x
  3. Step 3: Cross multiply
    397,960.02x = 549,171.87 × 225,891.72
  4. Step 4: Simplify right side
    397,960.02x = 124,053,378,289.92
  5. Step 5: Solve for x
    x = 124,053,378,289.92/397,960.02
  6. Step 6: Final answer
    x = 311,723.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.