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Finding the Fourth Proportional to 300,748.20, 451,243.80 and 132,300.60

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Solution

The fourth proportional to 300,748.20, 451,243.80 and 132,300.60 is: 198,504.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,748.20 : 451,243.80 = 132,300.60 : x
  2. Step 2: Convert to fraction form
    300,748.20/451,243.80 = 132,300.60/x
  3. Step 3: Cross multiply
    300,748.20x = 451,243.80 × 132,300.60
  4. Step 4: Simplify right side
    300,748.20x = 59,699,825,486.28
  5. Step 5: Solve for x
    x = 59,699,825,486.28/300,748.20
  6. Step 6: Final answer
    x = 198,504.35

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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.