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Finding the Fourth Proportional to 201,269.60, 301,558.80 and 131,112.80

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Solution

The fourth proportional to 201,269.60, 301,558.80 and 131,112.80 is: 196,444.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,269.60 : 301,558.80 = 131,112.80 : x
  2. Step 2: Convert to fraction form
    201,269.60/301,558.80 = 131,112.80/x
  3. Step 3: Cross multiply
    201,269.60x = 301,558.80 × 131,112.80
  4. Step 4: Simplify right side
    201,269.60x = 39,538,218,632.64
  5. Step 5: Solve for x
    x = 39,538,218,632.64/201,269.60
  6. Step 6: Final answer
    x = 196,444.07

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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.