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Finding the Fourth Proportional to 262,979.07, 394,510.13 and 85,444.62

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Solution

The fourth proportional to 262,979.07, 394,510.13 and 85,444.62 is: 128,180.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,979.07 : 394,510.13 = 85,444.62 : x
  2. Step 2: Convert to fraction form
    262,979.07/394,510.13 = 85,444.62/x
  3. Step 3: Cross multiply
    262,979.07x = 394,510.13 × 85,444.62
  4. Step 4: Simplify right side
    262,979.07x = 33,708,767,716.78
  5. Step 5: Solve for x
    x = 33,708,767,716.78/262,979.07
  6. Step 6: Final answer
    x = 128,180.42

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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.