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Finding the Fourth Proportional to 272,603.20, 408,904.80 and 197,953.60

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Solution

The fourth proportional to 272,603.20, 408,904.80 and 197,953.60 is: 296,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,603.20 : 408,904.80 = 197,953.60 : x
  2. Step 2: Convert to fraction form
    272,603.20/408,904.80 = 197,953.60/x
  3. Step 3: Cross multiply
    272,603.20x = 408,904.80 × 197,953.60
  4. Step 4: Simplify right side
    272,603.20x = 80,944,177,217.28
  5. Step 5: Solve for x
    x = 80,944,177,217.28/272,603.20
  6. Step 6: Final answer
    x = 296,930.40

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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.