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Finding the Fourth Proportional to 388,333.26, 582,640.14 and 135,651.06

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Solution

The fourth proportional to 388,333.26, 582,640.14 and 135,651.06 is: 203,525.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,333.26 : 582,640.14 = 135,651.06 : x
  2. Step 2: Convert to fraction form
    388,333.26/582,640.14 = 135,651.06/x
  3. Step 3: Cross multiply
    388,333.26x = 582,640.14 × 135,651.06
  4. Step 4: Simplify right side
    388,333.26x = 79,035,752,589.55
  5. Step 5: Solve for x
    x = 79,035,752,589.55/388,333.26
  6. Step 6: Final answer
    x = 203,525.58

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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.