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Finding the Fourth Proportional to 219,860,478.70, 329,976,722.40 and 90,560,883.40

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Solution

The fourth proportional to 219,860,478.70, 329,976,722.40 and 90,560,883.40 is: 135,917,940.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,860,478.70 : 329,976,722.40 = 90,560,883.40 : x
  2. Step 2: Convert to fraction form
    219,860,478.70/329,976,722.40 = 90,560,883.40/x
  3. Step 3: Cross multiply
    219,860,478.70x = 329,976,722.40 × 90,560,883.40
  4. Step 4: Simplify right side
    219,860,478.70x = 29,882,983,481,980,568
  5. Step 5: Solve for x
    x = 29,882,983,481,980,568/219,860,478.70
  6. Step 6: Final answer
    x = 135,917,940.59

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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.