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Finding the Fourth Proportional to 192,464.40, 288,696.60 and 121,605.60

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Solution

The fourth proportional to 192,464.40, 288,696.60 and 121,605.60 is: 182,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,464.40 : 288,696.60 = 121,605.60 : x
  2. Step 2: Convert to fraction form
    192,464.40/288,696.60 = 121,605.60/x
  3. Step 3: Cross multiply
    192,464.40x = 288,696.60 × 121,605.60
  4. Step 4: Simplify right side
    192,464.40x = 35,107,123,260.96
  5. Step 5: Solve for x
    x = 35,107,123,260.96/192,464.40
  6. Step 6: Final answer
    x = 182,408.40

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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.