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Finding the Fourth Proportional to 203,342.81, 280,613.09 and 112,704.62

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Solution

The fourth proportional to 203,342.81, 280,613.09 and 112,704.62 is: 155,532.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,342.81 : 280,613.09 = 112,704.62 : x
  2. Step 2: Convert to fraction form
    203,342.81/280,613.09 = 112,704.62/x
  3. Step 3: Cross multiply
    203,342.81x = 280,613.09 × 112,704.62
  4. Step 4: Simplify right side
    203,342.81x = 31,626,389,708.89
  5. Step 5: Solve for x
    x = 31,626,389,708.89/203,342.81
  6. Step 6: Final answer
    x = 155,532.38

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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.