Home / 221,236,810.40-331,571,780.40-196,861,383.20

Finding the Fourth Proportional to 221,236,810.40, 331,571,780.40 and 196,861,383.20

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Solution

The fourth proportional to 221,236,810.40, 331,571,780.40 and 196,861,383.20 is: 295,039,867.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,236,810.40 : 331,571,780.40 = 196,861,383.20 : x
  2. Step 2: Convert to fraction form
    221,236,810.40/331,571,780.40 = 196,861,383.20/x
  3. Step 3: Cross multiply
    221,236,810.40x = 331,571,780.40 × 196,861,383.20
  4. Step 4: Simplify right side
    221,236,810.40x = 65,273,679,319,630,640
  5. Step 5: Solve for x
    x = 65,273,679,319,630,640/221,236,810.40
  6. Step 6: Final answer
    x = 295,039,867.92

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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.