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Finding the Fourth Proportional to 356,669,101.20, 535,003,651.80 and 259,419,334.80

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Solution

The fourth proportional to 356,669,101.20, 535,003,651.80 and 259,419,334.80 is: 389,129,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,669,101.20 : 535,003,651.80 = 259,419,334.80 : x
  2. Step 2: Convert to fraction form
    356,669,101.20/535,003,651.80 = 259,419,334.80/x
  3. Step 3: Cross multiply
    356,669,101.20x = 535,003,651.80 × 259,419,334.80
  4. Step 4: Simplify right side
    356,669,101.20x = 138,790,291,465,526,832
  5. Step 5: Solve for x
    x = 138,790,291,465,526,832/356,669,101.20
  6. Step 6: Final answer
    x = 389,129,002.20

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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.