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Finding the Fourth Proportional to 422,661.84, 633,960.44 and 123,144.72

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Solution

The fourth proportional to 422,661.84, 633,960.44 and 123,144.72 is: 184,707.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,661.84 : 633,960.44 = 123,144.72 : x
  2. Step 2: Convert to fraction form
    422,661.84/633,960.44 = 123,144.72/x
  3. Step 3: Cross multiply
    422,661.84x = 633,960.44 × 123,144.72
  4. Step 4: Simplify right side
    422,661.84x = 78,068,880,874.88
  5. Step 5: Solve for x
    x = 78,068,880,874.88/422,661.84
  6. Step 6: Final answer
    x = 184,707.66

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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.