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Finding the Fourth Proportional to 388,589,433.80, 582,510,902.70 and 224,658,912.20

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Solution

The fourth proportional to 388,589,433.80, 582,510,902.70 and 224,658,912.20 is: 336,772,578.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,589,433.80 : 582,510,902.70 = 224,658,912.20 : x
  2. Step 2: Convert to fraction form
    388,589,433.80/582,510,902.70 = 224,658,912.20/x
  3. Step 3: Cross multiply
    388,589,433.80x = 582,510,902.70 × 224,658,912.20
  4. Step 4: Simplify right side
    388,589,433.80x = 130,866,265,745,222,048
  5. Step 5: Solve for x
    x = 130,866,265,745,222,048/388,589,433.80
  6. Step 6: Final answer
    x = 336,772,578.88

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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.