Home / 290,948,108.70-436,422,163.05-259,380,513.30

Finding the Fourth Proportional to 290,948,108.70, 436,422,163.05 and 259,380,513.30

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Solution

The fourth proportional to 290,948,108.70, 436,422,163.05 and 259,380,513.30 is: 389,070,769.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,948,108.70 : 436,422,163.05 = 259,380,513.30 : x
  2. Step 2: Convert to fraction form
    290,948,108.70/436,422,163.05 = 259,380,513.30/x
  3. Step 3: Cross multiply
    290,948,108.70x = 436,422,163.05 × 259,380,513.30
  4. Step 4: Simplify right side
    290,948,108.70x = 113,199,404,667,405,296
  5. Step 5: Solve for x
    x = 113,199,404,667,405,296/290,948,108.70
  6. Step 6: Final answer
    x = 389,070,769.95

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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.