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Finding the Fourth Proportional to 388,120.67, 582,147.65 and 236,278.34

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Solution

The fourth proportional to 388,120.67, 582,147.65 and 236,278.34 is: 354,397.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,120.67 : 582,147.65 = 236,278.34 : x
  2. Step 2: Convert to fraction form
    388,120.67/582,147.65 = 236,278.34/x
  3. Step 3: Cross multiply
    388,120.67x = 582,147.65 × 236,278.34
  4. Step 4: Simplify right side
    388,120.67x = 137,548,880,967.60
  5. Step 5: Solve for x
    x = 137,548,880,967.60/388,120.67
  6. Step 6: Final answer
    x = 354,397.21

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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.