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Finding the Fourth Proportional to 399,857.75, 599,880.40 and 273,557.45

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Solution

The fourth proportional to 399,857.75, 599,880.40 and 273,557.45 is: 410,400.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,857.75 : 599,880.40 = 273,557.45 : x
  2. Step 2: Convert to fraction form
    399,857.75/599,880.40 = 273,557.45/x
  3. Step 3: Cross multiply
    399,857.75x = 599,880.40 × 273,557.45
  4. Step 4: Simplify right side
    399,857.75x = 164,101,753,344.79
  5. Step 5: Solve for x
    x = 164,101,753,344.79/399,857.75
  6. Step 6: Final answer
    x = 410,400.33

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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.