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Finding the Fourth Proportional to 192,210.72, 288,382.64 and 79,951.52

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Solution

The fourth proportional to 192,210.72, 288,382.64 and 79,951.52 is: 119,954.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,210.72 : 288,382.64 = 79,951.52 : x
  2. Step 2: Convert to fraction form
    192,210.72/288,382.64 = 79,951.52/x
  3. Step 3: Cross multiply
    192,210.72x = 288,382.64 × 79,951.52
  4. Step 4: Simplify right side
    192,210.72x = 23,056,630,409.61
  5. Step 5: Solve for x
    x = 23,056,630,409.61/192,210.72
  6. Step 6: Final answer
    x = 119,954.97

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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.