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Finding the Fourth Proportional to 262,979.78, 394,535.91 and 75,990.02

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Solution

The fourth proportional to 262,979.78, 394,535.91 and 75,990.02 is: 114,004.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,979.78 : 394,535.91 = 75,990.02 : x
  2. Step 2: Convert to fraction form
    262,979.78/394,535.91 = 75,990.02/x
  3. Step 3: Cross multiply
    262,979.78x = 394,535.91 × 75,990.02
  4. Step 4: Simplify right side
    262,979.78x = 29,980,791,691.62
  5. Step 5: Solve for x
    x = 29,980,791,691.62/262,979.78
  6. Step 6: Final answer
    x = 114,004.17

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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.