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Finding the Fourth Proportional to 388,195.22, 581,450.72 and 188,095.96

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Solution

The fourth proportional to 388,195.22, 581,450.72 and 188,095.96 is: 281,735.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,195.22 : 581,450.72 = 188,095.96 : x
  2. Step 2: Convert to fraction form
    388,195.22/581,450.72 = 188,095.96/x
  3. Step 3: Cross multiply
    388,195.22x = 581,450.72 × 188,095.96
  4. Step 4: Simplify right side
    388,195.22x = 109,368,531,371.09
  5. Step 5: Solve for x
    x = 109,368,531,371.09/388,195.22
  6. Step 6: Final answer
    x = 281,735.90

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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.