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Finding the Fourth Proportional to 262,857.80, 394,578.30 and 163,130.60

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Solution

The fourth proportional to 262,857.80, 394,578.30 and 163,130.60 is: 244,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,857.80 : 394,578.30 = 163,130.60 : x
  2. Step 2: Convert to fraction form
    262,857.80/394,578.30 = 163,130.60/x
  3. Step 3: Cross multiply
    262,857.80x = 394,578.30 × 163,130.60
  4. Step 4: Simplify right side
    262,857.80x = 64,367,794,825.98
  5. Step 5: Solve for x
    x = 64,367,794,825.98/262,857.80
  6. Step 6: Final answer
    x = 244,876.87

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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.