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Finding the Fourth Proportional to 388,340,715.20, 582,511,072.80 and 235,955,998.40

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Solution

The fourth proportional to 388,340,715.20, 582,511,072.80 and 235,955,998.40 is: 353,933,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,340,715.20 : 582,511,072.80 = 235,955,998.40 : x
  2. Step 2: Convert to fraction form
    388,340,715.20/582,511,072.80 = 235,955,998.40/x
  3. Step 3: Cross multiply
    388,340,715.20x = 582,511,072.80 × 235,955,998.40
  4. Step 4: Simplify right side
    388,340,715.20x = 137,446,981,761,579,072
  5. Step 5: Solve for x
    x = 137,446,981,761,579,072/388,340,715.20
  6. Step 6: Final answer
    x = 353,933,997.60

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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.