Home / 398,573,887.20-597,955,309.20-204,515,253.60

Finding the Fourth Proportional to 398,573,887.20, 597,955,309.20 and 204,515,253.60

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Solution

The fourth proportional to 398,573,887.20, 597,955,309.20 and 204,515,253.60 is: 306,821,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,573,887.20 : 597,955,309.20 = 204,515,253.60 : x
  2. Step 2: Convert to fraction form
    398,573,887.20/597,955,309.20 = 204,515,253.60/x
  3. Step 3: Cross multiply
    398,573,887.20x = 597,955,309.20 × 204,515,253.60
  4. Step 4: Simplify right side
    398,573,887.20x = 122,290,981,702,504,416
  5. Step 5: Solve for x
    x = 122,290,981,702,504,416/398,573,887.20
  6. Step 6: Final answer
    x = 306,821,358.92

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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.