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Finding the Fourth Proportional to 299,449,861.20, 449,174,791.80 and 146,016,939.60

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Solution

The fourth proportional to 299,449,861.20, 449,174,791.80 and 146,016,939.60 is: 219,025,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,449,861.20 : 449,174,791.80 = 146,016,939.60 : x
  2. Step 2: Convert to fraction form
    299,449,861.20/449,174,791.80 = 146,016,939.60/x
  3. Step 3: Cross multiply
    299,449,861.20x = 449,174,791.80 × 146,016,939.60
  4. Step 4: Simplify right side
    299,449,861.20x = 65,587,128,444,103,176
  5. Step 5: Solve for x
    x = 65,587,128,444,103,176/299,449,861.20
  6. Step 6: Final answer
    x = 219,025,409.40

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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.