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Finding the Fourth Proportional to 399,861.88, 599,823.72 and 133,623.31

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Solution

The fourth proportional to 399,861.88, 599,823.72 and 133,623.31 is: 200,445.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,861.88 : 599,823.72 = 133,623.31 : x
  2. Step 2: Convert to fraction form
    399,861.88/599,823.72 = 133,623.31/x
  3. Step 3: Cross multiply
    399,861.88x = 599,823.72 × 133,623.31
  4. Step 4: Simplify right side
    399,861.88x = 80,150,430,882.91
  5. Step 5: Solve for x
    x = 80,150,430,882.91/399,861.88
  6. Step 6: Final answer
    x = 200,445.29

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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.