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Finding the Fourth Proportional to 259,168.71, 388,794.74 and 90,685.27

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Solution

The fourth proportional to 259,168.71, 388,794.74 and 90,685.27 is: 136,042.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,168.71 : 388,794.74 = 90,685.27 : x
  2. Step 2: Convert to fraction form
    259,168.71/388,794.74 = 90,685.27/x
  3. Step 3: Cross multiply
    259,168.71x = 388,794.74 × 90,685.27
  4. Step 4: Simplify right side
    259,168.71x = 35,257,956,004.05
  5. Step 5: Solve for x
    x = 35,257,956,004.05/259,168.71
  6. Step 6: Final answer
    x = 136,042.49

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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.