Home / 221,392,820.90-331,801,182.38-90,082,069.22

Finding the Fourth Proportional to 221,392,820.90, 331,801,182.38 and 90,082,069.22

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Solution

The fourth proportional to 221,392,820.90, 331,801,182.38 and 90,082,069.22 is: 135,005,900.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,392,820.90 : 331,801,182.38 = 90,082,069.22 : x
  2. Step 2: Convert to fraction form
    221,392,820.90/331,801,182.38 = 90,082,069.22/x
  3. Step 3: Cross multiply
    221,392,820.90x = 331,801,182.38 × 90,082,069.22
  4. Step 4: Simplify right side
    221,392,820.90x = 29,889,337,076,999,204
  5. Step 5: Solve for x
    x = 29,889,337,076,999,204/221,392,820.90
  6. Step 6: Final answer
    x = 135,005,900.17

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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.