Home / 219,794,515.20-329,691,772.80-66,420,642.60

Finding the Fourth Proportional to 219,794,515.20, 329,691,772.80 and 66,420,642.60

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Solution

The fourth proportional to 219,794,515.20, 329,691,772.80 and 66,420,642.60 is: 99,630,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,794,515.20 : 329,691,772.80 = 66,420,642.60 : x
  2. Step 2: Convert to fraction form
    219,794,515.20/329,691,772.80 = 66,420,642.60/x
  3. Step 3: Cross multiply
    219,794,515.20x = 329,691,772.80 × 66,420,642.60
  4. Step 4: Simplify right side
    219,794,515.20x = 21,898,339,409,309,204
  5. Step 5: Solve for x
    x = 21,898,339,409,309,204/219,794,515.20
  6. Step 6: Final answer
    x = 99,630,963.90

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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.