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Finding the Fourth Proportional to 272,387.80, 408,095.70 and 131,836.60

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Solution

The fourth proportional to 272,387.80, 408,095.70 and 131,836.60 is: 197,519.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,387.80 : 408,095.70 = 131,836.60 : x
  2. Step 2: Convert to fraction form
    272,387.80/408,095.70 = 131,836.60/x
  3. Step 3: Cross multiply
    272,387.80x = 408,095.70 × 131,836.60
  4. Step 4: Simplify right side
    272,387.80x = 53,801,949,562.62
  5. Step 5: Solve for x
    x = 53,801,949,562.62/272,387.80
  6. Step 6: Final answer
    x = 197,519.67

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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.