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Finding the Fourth Proportional to 272,147.40, 408,221.10 and 202,163.40

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Solution

The fourth proportional to 272,147.40, 408,221.10 and 202,163.40 is: 303,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,147.40 : 408,221.10 = 202,163.40 : x
  2. Step 2: Convert to fraction form
    272,147.40/408,221.10 = 202,163.40/x
  3. Step 3: Cross multiply
    272,147.40x = 408,221.10 × 202,163.40
  4. Step 4: Simplify right side
    272,147.40x = 82,527,365,527.74
  5. Step 5: Solve for x
    x = 82,527,365,527.74/272,147.40
  6. Step 6: Final answer
    x = 303,245.10

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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.