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Finding the Fourth Proportional to 272,606.20, 408,909.30 and 197,956.60

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Solution

The fourth proportional to 272,606.20, 408,909.30 and 197,956.60 is: 296,934.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,606.20 : 408,909.30 = 197,956.60 : x
  2. Step 2: Convert to fraction form
    272,606.20/408,909.30 = 197,956.60/x
  3. Step 3: Cross multiply
    272,606.20x = 408,909.30 × 197,956.60
  4. Step 4: Simplify right side
    272,606.20x = 80,946,294,736.38
  5. Step 5: Solve for x
    x = 80,946,294,736.38/272,606.20
  6. Step 6: Final answer
    x = 296,934.90

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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.