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Finding the Fourth Proportional to 371,817.86, 557,722.33 and 135,158.54

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Solution

The fourth proportional to 371,817.86, 557,722.33 and 135,158.54 is: 202,736.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,817.86 : 557,722.33 = 135,158.54 : x
  2. Step 2: Convert to fraction form
    371,817.86/557,722.33 = 135,158.54/x
  3. Step 3: Cross multiply
    371,817.86x = 557,722.33 × 135,158.54
  4. Step 4: Simplify right side
    371,817.86x = 75,380,932,721.69
  5. Step 5: Solve for x
    x = 75,380,932,721.69/371,817.86
  6. Step 6: Final answer
    x = 202,736.18

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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.