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Finding the Fourth Proportional to 399,481.14, 599,223.95 and 133,240.92

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Solution

The fourth proportional to 399,481.14, 599,223.95 and 133,240.92 is: 199,862.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,481.14 : 599,223.95 = 133,240.92 : x
  2. Step 2: Convert to fraction form
    399,481.14/599,223.95 = 133,240.92/x
  3. Step 3: Cross multiply
    399,481.14x = 599,223.95 × 133,240.92
  4. Step 4: Simplify right side
    399,481.14x = 79,841,153,401.09
  5. Step 5: Solve for x
    x = 79,841,153,401.09/399,481.14
  6. Step 6: Final answer
    x = 199,862.13

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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.