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Finding the Fourth Proportional to 300,008.72, 449,861.40 and 100,259.60

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Solution

The fourth proportional to 300,008.72, 449,861.40 and 100,259.60 is: 150,338.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,008.72 : 449,861.40 = 100,259.60 : x
  2. Step 2: Convert to fraction form
    300,008.72/449,861.40 = 100,259.60/x
  3. Step 3: Cross multiply
    300,008.72x = 449,861.40 × 100,259.60
  4. Step 4: Simplify right side
    300,008.72x = 45,102,924,019.44
  5. Step 5: Solve for x
    x = 45,102,924,019.44/300,008.72
  6. Step 6: Final answer
    x = 150,338.71

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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.