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Finding the Fourth Proportional to 399,561.54, 599,347.50 and 133,322.05

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Solution

The fourth proportional to 399,561.54, 599,347.50 and 133,322.05 is: 199,984.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,561.54 : 599,347.50 = 133,322.05 : x
  2. Step 2: Convert to fraction form
    399,561.54/599,347.50 = 133,322.05/x
  3. Step 3: Cross multiply
    399,561.54x = 599,347.50 × 133,322.05
  4. Step 4: Simplify right side
    399,561.54x = 79,906,238,860.74
  5. Step 5: Solve for x
    x = 79,906,238,860.74/399,561.54
  6. Step 6: Final answer
    x = 199,984.81

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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.