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Finding the Fourth Proportional to 201,661.22, 302,589.72 and 126,816.60

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Solution

The fourth proportional to 201,661.22, 302,589.72 and 126,816.60 is: 190,286.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,661.22 : 302,589.72 = 126,816.60 : x
  2. Step 2: Convert to fraction form
    201,661.22/302,589.72 = 126,816.60/x
  3. Step 3: Cross multiply
    201,661.22x = 302,589.72 × 126,816.60
  4. Step 4: Simplify right side
    201,661.22x = 38,373,399,485.35
  5. Step 5: Solve for x
    x = 38,373,399,485.35/201,661.22
  6. Step 6: Final answer
    x = 190,286.46

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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.