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Finding the Fourth Proportional to 272,321.20, 408,136.20 and 242,599.60

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Solution

The fourth proportional to 272,321.20, 408,136.20 and 242,599.60 is: 363,591.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,321.20 : 408,136.20 = 242,599.60 : x
  2. Step 2: Convert to fraction form
    272,321.20/408,136.20 = 242,599.60/x
  3. Step 3: Cross multiply
    272,321.20x = 408,136.20 × 242,599.60
  4. Step 4: Simplify right side
    272,321.20x = 99,013,678,865.52
  5. Step 5: Solve for x
    x = 99,013,678,865.52/272,321.20
  6. Step 6: Final answer
    x = 363,591.52

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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.