Home / 221,443,380.12-305,585,943.90-122,321,994.20

Finding the Fourth Proportional to 221,443,380.12, 305,585,943.90 and 122,321,994.20

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Solution

The fourth proportional to 221,443,380.12, 305,585,943.90 and 122,321,994.20 is: 168,801,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,443,380.12 : 305,585,943.90 = 122,321,994.20 : x
  2. Step 2: Convert to fraction form
    221,443,380.12/305,585,943.90 = 122,321,994.20/x
  3. Step 3: Cross multiply
    221,443,380.12x = 305,585,943.90 × 122,321,994.20
  4. Step 4: Simplify right side
    221,443,380.12x = 37,379,882,057,337,320
  5. Step 5: Solve for x
    x = 37,379,882,057,337,320/221,443,380.12
  6. Step 6: Final answer
    x = 168,801,081.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.