Home / 388,034,982.80-582,133,344.60-129,330,573.20

Finding the Fourth Proportional to 388,034,982.80, 582,133,344.60 and 129,330,573.20

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Solution

The fourth proportional to 388,034,982.80, 582,133,344.60 and 129,330,573.20 is: 194,022,813.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,034,982.80 : 582,133,344.60 = 129,330,573.20 : x
  2. Step 2: Convert to fraction form
    388,034,982.80/582,133,344.60 = 129,330,573.20/x
  3. Step 3: Cross multiply
    388,034,982.80x = 582,133,344.60 × 129,330,573.20
  4. Step 4: Simplify right side
    388,034,982.80x = 75,287,639,135,951,136
  5. Step 5: Solve for x
    x = 75,287,639,135,951,136/388,034,982.80
  6. Step 6: Final answer
    x = 194,022,813.59

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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.