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Finding the Fourth Proportional to 201,491.55, 278,052.60 and 109,607.93

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Solution

The fourth proportional to 201,491.55, 278,052.60 and 109,607.93 is: 151,255.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,491.55 : 278,052.60 = 109,607.93 : x
  2. Step 2: Convert to fraction form
    201,491.55/278,052.60 = 109,607.93/x
  3. Step 3: Cross multiply
    201,491.55x = 278,052.60 × 109,607.93
  4. Step 4: Simplify right side
    201,491.55x = 30,476,770,928.08
  5. Step 5: Solve for x
    x = 30,476,770,928.08/201,491.55
  6. Step 6: Final answer
    x = 151,255.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.