Home / 328,055,288.40-491,747,009.40-191,670,469.20

Finding the Fourth Proportional to 328,055,288.40, 491,747,009.40 and 191,670,469.20

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Solution

The fourth proportional to 328,055,288.40, 491,747,009.40 and 191,670,469.20 is: 287,309,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,055,288.40 : 491,747,009.40 = 191,670,469.20 : x
  2. Step 2: Convert to fraction form
    328,055,288.40/491,747,009.40 = 191,670,469.20/x
  3. Step 3: Cross multiply
    328,055,288.40x = 491,747,009.40 × 191,670,469.20
  4. Step 4: Simplify right side
    328,055,288.40x = 94,253,380,019,394,800
  5. Step 5: Solve for x
    x = 94,253,380,019,394,800/328,055,288.40
  6. Step 6: Final answer
    x = 287,309,436.40

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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.