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Finding the Fourth Proportional to 422,171.52, 633,124.85 and 122,672.81

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Solution

The fourth proportional to 422,171.52, 633,124.85 and 122,672.81 is: 183,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,171.52 : 633,124.85 = 122,672.81 : x
  2. Step 2: Convert to fraction form
    422,171.52/633,124.85 = 122,672.81/x
  3. Step 3: Cross multiply
    422,171.52x = 633,124.85 × 122,672.81
  4. Step 4: Simplify right side
    422,171.52x = 77,667,200,651.34
  5. Step 5: Solve for x
    x = 77,667,200,651.34/422,171.52
  6. Step 6: Final answer
    x = 183,970.73

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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.