Home / 380,919,379.30-571,241,989.78-131,856,964.91

Finding the Fourth Proportional to 380,919,379.30, 571,241,989.78 and 131,856,964.91

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Solution

The fourth proportional to 380,919,379.30, 571,241,989.78 and 131,856,964.91 is: 197,737,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,919,379.30 : 571,241,989.78 = 131,856,964.91 : x
  2. Step 2: Convert to fraction form
    380,919,379.30/571,241,989.78 = 131,856,964.91/x
  3. Step 3: Cross multiply
    380,919,379.30x = 571,241,989.78 × 131,856,964.91
  4. Step 4: Simplify right side
    380,919,379.30x = 75,322,235,004,197,296
  5. Step 5: Solve for x
    x = 75,322,235,004,197,296/380,919,379.30
  6. Step 6: Final answer
    x = 197,737,996.80

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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.