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Finding the Fourth Proportional to 427,793.44, 641,836.02 and 161,630.68

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Solution

The fourth proportional to 427,793.44, 641,836.02 and 161,630.68 is: 242,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,793.44 : 641,836.02 = 161,630.68 : x
  2. Step 2: Convert to fraction form
    427,793.44/641,836.02 = 161,630.68/x
  3. Step 3: Cross multiply
    427,793.44x = 641,836.02 × 161,630.68
  4. Step 4: Simplify right side
    427,793.44x = 103,740,392,361.09
  5. Step 5: Solve for x
    x = 103,740,392,361.09/427,793.44
  6. Step 6: Final answer
    x = 242,501.13

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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.