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Finding the Fourth Proportional to 260,892,843.80, 391,339,265.70 and 107,459,922.20

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Solution

The fourth proportional to 260,892,843.80, 391,339,265.70 and 107,459,922.20 is: 161,189,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,892,843.80 : 391,339,265.70 = 107,459,922.20 : x
  2. Step 2: Convert to fraction form
    260,892,843.80/391,339,265.70 = 107,459,922.20/x
  3. Step 3: Cross multiply
    260,892,843.80x = 391,339,265.70 × 107,459,922.20
  4. Step 4: Simplify right side
    260,892,843.80x = 42,053,287,045,927,128
  5. Step 5: Solve for x
    x = 42,053,287,045,927,128/260,892,843.80
  6. Step 6: Final answer
    x = 161,189,883.30

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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.