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Finding the Fourth Proportional to 192,311.28, 288,342 and 80,068.32

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Solution

The fourth proportional to 192,311.28, 288,342 and 80,068.32 is: 120,050.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,311.28 : 288,342 = 80,068.32 : x
  2. Step 2: Convert to fraction form
    192,311.28/288,342 = 80,068.32/x
  3. Step 3: Cross multiply
    192,311.28x = 288,342 × 80,068.32
  4. Step 4: Simplify right side
    192,311.28x = 23,087,059,525.44
  5. Step 5: Solve for x
    x = 23,087,059,525.44/192,311.28
  6. Step 6: Final answer
    x = 120,050.47

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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.