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Finding the Fourth Proportional to 363,481,987.20, 545,226,091.20 and 121,144,891.20

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Solution

The fourth proportional to 363,481,987.20, 545,226,091.20 and 121,144,891.20 is: 181,718,373.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,481,987.20 : 545,226,091.20 = 121,144,891.20 : x
  2. Step 2: Convert to fraction form
    363,481,987.20/545,226,091.20 = 121,144,891.20/x
  3. Step 3: Cross multiply
    363,481,987.20x = 545,226,091.20 × 121,144,891.20
  4. Step 4: Simplify right side
    363,481,987.20x = 66,051,355,497,825,288
  5. Step 5: Solve for x
    x = 66,051,355,497,825,288/363,481,987.20
  6. Step 6: Final answer
    x = 181,718,373.47

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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.