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Finding the Fourth Proportional to 399,561.41, 599,347.31 and 133,321.93

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Solution

The fourth proportional to 399,561.41, 599,347.31 and 133,321.93 is: 199,984.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,561.41 : 599,347.31 = 133,321.93 : x
  2. Step 2: Convert to fraction form
    399,561.41/599,347.31 = 133,321.93/x
  3. Step 3: Cross multiply
    399,561.41x = 599,347.31 × 133,321.93
  4. Step 4: Simplify right side
    399,561.41x = 79,906,138,195.26
  5. Step 5: Solve for x
    x = 79,906,138,195.26/399,561.41
  6. Step 6: Final answer
    x = 199,984.62

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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.