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Finding the Fourth Proportional to 242,319,786.80, 363,481,753.80 and 80,761,722.80

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Solution

The fourth proportional to 242,319,786.80, 363,481,753.80 and 80,761,722.80 is: 121,143,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,319,786.80 : 363,481,753.80 = 80,761,722.80 : x
  2. Step 2: Convert to fraction form
    242,319,786.80/363,481,753.80 = 80,761,722.80/x
  3. Step 3: Cross multiply
    242,319,786.80x = 363,481,753.80 × 80,761,722.80
  4. Step 4: Simplify right side
    242,319,786.80x = 29,355,412,643,253,448
  5. Step 5: Solve for x
    x = 29,355,412,643,253,448/242,319,786.80
  6. Step 6: Final answer
    x = 121,143,275.30

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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.