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Finding the Fourth Proportional to 272,427.20, 408,640.80 and 197,194.40

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Solution

The fourth proportional to 272,427.20, 408,640.80 and 197,194.40 is: 295,791.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,427.20 : 408,640.80 = 197,194.40 : x
  2. Step 2: Convert to fraction form
    272,427.20/408,640.80 = 197,194.40/x
  3. Step 3: Cross multiply
    272,427.20x = 408,640.80 × 197,194.40
  4. Step 4: Simplify right side
    272,427.20x = 80,581,677,371.52
  5. Step 5: Solve for x
    x = 80,581,677,371.52/272,427.20
  6. Step 6: Final answer
    x = 295,791.60

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1.5x scale

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.