Home / 290,948,221.20-436,422,331.80-259,380,625.80

Finding the Fourth Proportional to 290,948,221.20, 436,422,331.80 and 259,380,625.80

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Solution

The fourth proportional to 290,948,221.20, 436,422,331.80 and 259,380,625.80 is: 389,070,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,948,221.20 : 436,422,331.80 = 259,380,625.80 : x
  2. Step 2: Convert to fraction form
    290,948,221.20/436,422,331.80 = 259,380,625.80/x
  3. Step 3: Cross multiply
    290,948,221.20x = 436,422,331.80 × 259,380,625.80
  4. Step 4: Simplify right side
    290,948,221.20x = 113,199,497,535,379,248
  5. Step 5: Solve for x
    x = 113,199,497,535,379,248/290,948,221.20
  6. Step 6: Final answer
    x = 389,070,938.70

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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.