Home / 290,948,115.20-436,422,172.80-259,380,519.80

Finding the Fourth Proportional to 290,948,115.20, 436,422,172.80 and 259,380,519.80

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Solution

The fourth proportional to 290,948,115.20, 436,422,172.80 and 259,380,519.80 is: 389,070,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,948,115.20 : 436,422,172.80 = 259,380,519.80 : x
  2. Step 2: Convert to fraction form
    290,948,115.20/436,422,172.80 = 259,380,519.80/x
  3. Step 3: Cross multiply
    290,948,115.20x = 436,422,172.80 × 259,380,519.80
  4. Step 4: Simplify right side
    290,948,115.20x = 113,199,410,033,109,424
  5. Step 5: Solve for x
    x = 113,199,410,033,109,424/290,948,115.20
  6. Step 6: Final answer
    x = 389,070,779.70

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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.