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Finding the Fourth Proportional to 242,321,879.80, 363,484,893.30 and 80,763,815.80

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Solution

The fourth proportional to 242,321,879.80, 363,484,893.30 and 80,763,815.80 is: 121,146,414.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,321,879.80 : 363,484,893.30 = 80,763,815.80 : x
  2. Step 2: Convert to fraction form
    242,321,879.80/363,484,893.30 = 80,763,815.80/x
  3. Step 3: Cross multiply
    242,321,879.80x = 363,484,893.30 × 80,763,815.80
  4. Step 4: Simplify right side
    242,321,879.80x = 29,356,426,968,563,856
  5. Step 5: Solve for x
    x = 29,356,426,968,563,856/242,321,879.80
  6. Step 6: Final answer
    x = 121,146,414.81

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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.