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Finding the Fourth Proportional to 388,299.30, 582,361.16 and 151,520.10

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Solution

The fourth proportional to 388,299.30, 582,361.16 and 151,520.10 is: 227,245.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,299.30 : 582,361.16 = 151,520.10 : x
  2. Step 2: Convert to fraction form
    388,299.30/582,361.16 = 151,520.10/x
  3. Step 3: Cross multiply
    388,299.30x = 582,361.16 × 151,520.10
  4. Step 4: Simplify right side
    388,299.30x = 88,239,420,441.72
  5. Step 5: Solve for x
    x = 88,239,420,441.72/388,299.30
  6. Step 6: Final answer
    x = 227,245.89

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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.