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Finding the Fourth Proportional to 281,124.72, 421,743.52 and 103,632.64

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Solution

The fourth proportional to 281,124.72, 421,743.52 and 103,632.64 is: 155,469.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,124.72 : 421,743.52 = 103,632.64 : x
  2. Step 2: Convert to fraction form
    281,124.72/421,743.52 = 103,632.64/x
  3. Step 3: Cross multiply
    281,124.72x = 421,743.52 × 103,632.64
  4. Step 4: Simplify right side
    281,124.72x = 43,706,394,380.49
  5. Step 5: Solve for x
    x = 43,706,394,380.49/281,124.72
  6. Step 6: Final answer
    x = 155,469.77

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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.