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Finding the Fourth Proportional to 485,693,879.66, 728,591,855.87 and 158,194,894.31

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Solution

The fourth proportional to 485,693,879.66, 728,591,855.87 and 158,194,894.31 is: 237,308,964.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,693,879.66 : 728,591,855.87 = 158,194,894.31 : x
  2. Step 2: Convert to fraction form
    485,693,879.66/728,591,855.87 = 158,194,894.31/x
  3. Step 3: Cross multiply
    485,693,879.66x = 728,591,855.87 × 158,194,894.31
  4. Step 4: Simplify right side
    485,693,879.66x = 115,259,511,634,481,408
  5. Step 5: Solve for x
    x = 115,259,511,634,481,408/485,693,879.66
  6. Step 6: Final answer
    x = 237,308,964.48

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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.