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Finding the Fourth Proportional to 200,356.12, 300,453.46 and 72,235.95

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Solution

The fourth proportional to 200,356.12, 300,453.46 and 72,235.95 is: 108,324.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,356.12 : 300,453.46 = 72,235.95 : x
  2. Step 2: Convert to fraction form
    200,356.12/300,453.46 = 72,235.95/x
  3. Step 3: Cross multiply
    200,356.12x = 300,453.46 × 72,235.95
  4. Step 4: Simplify right side
    200,356.12x = 21,703,539,806.60
  5. Step 5: Solve for x
    x = 21,703,539,806.60/200,356.12
  6. Step 6: Final answer
    x = 108,324.82

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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.