Home / 305,137,021.44-421,086,120.30-165,907,782.84

Finding the Fourth Proportional to 305,137,021.44, 421,086,120.30 and 165,907,782.84

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Solution

The fourth proportional to 305,137,021.44, 421,086,120.30 and 165,907,782.84 is: 228,951,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,137,021.44 : 421,086,120.30 = 165,907,782.84 : x
  2. Step 2: Convert to fraction form
    305,137,021.44/421,086,120.30 = 165,907,782.84/x
  3. Step 3: Cross multiply
    305,137,021.44x = 421,086,120.30 × 165,907,782.84
  4. Step 4: Simplify right side
    305,137,021.44x = 69,861,464,603,670,520
  5. Step 5: Solve for x
    x = 69,861,464,603,670,520/305,137,021.44
  6. Step 6: Final answer
    x = 228,951,125.87

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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.