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Finding the Fourth Proportional to 262,379.20, 393,374.40 and 112,496.80

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Solution

The fourth proportional to 262,379.20, 393,374.40 and 112,496.80 is: 168,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,379.20 : 393,374.40 = 112,496.80 : x
  2. Step 2: Convert to fraction form
    262,379.20/393,374.40 = 112,496.80/x
  3. Step 3: Cross multiply
    262,379.20x = 393,374.40 × 112,496.80
  4. Step 4: Simplify right side
    262,379.20x = 44,253,361,201.92
  5. Step 5: Solve for x
    x = 44,253,361,201.92/262,379.20
  6. Step 6: Final answer
    x = 168,661.85

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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.