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Finding the Fourth Proportional to 300,127.80, 449,968.08 and 100,329.96

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Solution

The fourth proportional to 300,127.80, 449,968.08 and 100,329.96 is: 150,420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,127.80 : 449,968.08 = 100,329.96 : x
  2. Step 2: Convert to fraction form
    300,127.80/449,968.08 = 100,329.96/x
  3. Step 3: Cross multiply
    300,127.80x = 449,968.08 × 100,329.96
  4. Step 4: Simplify right side
    300,127.80x = 45,145,279,467.68
  5. Step 5: Solve for x
    x = 45,145,279,467.68/300,127.80
  6. Step 6: Final answer
    x = 150,420.19

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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.