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Finding the Fourth Proportional to 300,028.96, 449,996.40 and 100,352.80

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Solution

The fourth proportional to 300,028.96, 449,996.40 and 100,352.80 is: 150,513.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,028.96 : 449,996.40 = 100,352.80 : x
  2. Step 2: Convert to fraction form
    300,028.96/449,996.40 = 100,352.80/x
  3. Step 3: Cross multiply
    300,028.96x = 449,996.40 × 100,352.80
  4. Step 4: Simplify right side
    300,028.96x = 45,158,398,729.92
  5. Step 5: Solve for x
    x = 45,158,398,729.92/300,028.96
  6. Step 6: Final answer
    x = 150,513.47

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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.