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Finding the Fourth Proportional to 262,433.70, 393,713.02 and 84,940.70

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Solution

The fourth proportional to 262,433.70, 393,713.02 and 84,940.70 is: 127,431.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,433.70 : 393,713.02 = 84,940.70 : x
  2. Step 2: Convert to fraction form
    262,433.70/393,713.02 = 84,940.70/x
  3. Step 3: Cross multiply
    262,433.70x = 393,713.02 × 84,940.70
  4. Step 4: Simplify right side
    262,433.70x = 33,442,259,517.91
  5. Step 5: Solve for x
    x = 33,442,259,517.91/262,433.70
  6. Step 6: Final answer
    x = 127,431.27

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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.