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Finding the Fourth Proportional to 399,979.68, 600,001.38 and 133,741.86

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Solution

The fourth proportional to 399,979.68, 600,001.38 and 133,741.86 is: 200,623.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,979.68 : 600,001.38 = 133,741.86 : x
  2. Step 2: Convert to fraction form
    399,979.68/600,001.38 = 133,741.86/x
  3. Step 3: Cross multiply
    399,979.68x = 600,001.38 × 133,741.86
  4. Step 4: Simplify right side
    399,979.68x = 80,245,300,563.77
  5. Step 5: Solve for x
    x = 80,245,300,563.77/399,979.68
  6. Step 6: Final answer
    x = 200,623.44

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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.