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Finding the Fourth Proportional to 262,862.20, 394,293.30 and 188,212.60

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Solution

The fourth proportional to 262,862.20, 394,293.30 and 188,212.60 is: 282,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,862.20 : 394,293.30 = 188,212.60 : x
  2. Step 2: Convert to fraction form
    262,862.20/394,293.30 = 188,212.60/x
  3. Step 3: Cross multiply
    262,862.20x = 394,293.30 × 188,212.60
  4. Step 4: Simplify right side
    262,862.20x = 74,210,967,155.58
  5. Step 5: Solve for x
    x = 74,210,967,155.58/262,862.20
  6. Step 6: Final answer
    x = 282,318.90

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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.