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Finding the Fourth Proportional to 188,684.65, 260,758.41 and 154,639.44

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Solution

The fourth proportional to 188,684.65, 260,758.41 and 154,639.44 is: 213,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,684.65 : 260,758.41 = 154,639.44 : x
  2. Step 2: Convert to fraction form
    188,684.65/260,758.41 = 154,639.44/x
  3. Step 3: Cross multiply
    188,684.65x = 260,758.41 × 154,639.44
  4. Step 4: Simplify right side
    188,684.65x = 40,323,532,420.70
  5. Step 5: Solve for x
    x = 40,323,532,420.70/188,684.65
  6. Step 6: Final answer
    x = 213,708.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.