Home / 391,659,872.72-540,493,473.48-213,045,302.96

Finding the Fourth Proportional to 391,659,872.72, 540,493,473.48 and 213,045,302.96

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Solution

The fourth proportional to 391,659,872.72, 540,493,473.48 and 213,045,302.96 is: 294,004,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,659,872.72 : 540,493,473.48 = 213,045,302.96 : x
  2. Step 2: Convert to fraction form
    391,659,872.72/540,493,473.48 = 213,045,302.96/x
  3. Step 3: Cross multiply
    391,659,872.72x = 540,493,473.48 × 213,045,302.96
  4. Step 4: Simplify right side
    391,659,872.72x = 115,149,595,805,449,328
  5. Step 5: Solve for x
    x = 115,149,595,805,449,328/391,659,872.72
  6. Step 6: Final answer
    x = 294,004,067.88

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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.