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Finding the Fourth Proportional to 301,042,449.40, 451,511,608.90 and 79,716,972.90

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Solution

The fourth proportional to 301,042,449.40, 451,511,608.90 and 79,716,972.90 is: 119,561,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,042,449.40 : 451,511,608.90 = 79,716,972.90 : x
  2. Step 2: Convert to fraction form
    301,042,449.40/451,511,608.90 = 79,716,972.90/x
  3. Step 3: Cross multiply
    301,042,449.40x = 451,511,608.90 × 79,716,972.90
  4. Step 4: Simplify right side
    301,042,449.40x = 35,993,138,690,716,700
  5. Step 5: Solve for x
    x = 35,993,138,690,716,700/301,042,449.40
  6. Step 6: Final answer
    x = 119,561,672.32

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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.