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Finding the Fourth Proportional to 399,981.56, 600,004.26 and 133,743.47

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Solution

The fourth proportional to 399,981.56, 600,004.26 and 133,743.47 is: 200,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,981.56 : 600,004.26 = 133,743.47 : x
  2. Step 2: Convert to fraction form
    399,981.56/600,004.26 = 133,743.47/x
  3. Step 3: Cross multiply
    399,981.56x = 600,004.26 × 133,743.47
  4. Step 4: Simplify right side
    399,981.56x = 80,246,648,747.16
  5. Step 5: Solve for x
    x = 80,246,648,747.16/399,981.56
  6. Step 6: Final answer
    x = 200,625.87

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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.