Home / 215,651,280.21-323,147,760.07-128,040,273.37

Finding the Fourth Proportional to 215,651,280.21, 323,147,760.07 and 128,040,273.37

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Solution

The fourth proportional to 215,651,280.21, 323,147,760.07 and 128,040,273.37 is: 191,864,975.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,651,280.21 : 323,147,760.07 = 128,040,273.37 : x
  2. Step 2: Convert to fraction form
    215,651,280.21/323,147,760.07 = 128,040,273.37/x
  3. Step 3: Cross multiply
    215,651,280.21x = 323,147,760.07 × 128,040,273.37
  4. Step 4: Simplify right side
    215,651,280.21x = 41,375,927,538,589,240
  5. Step 5: Solve for x
    x = 41,375,927,538,589,240/215,651,280.21
  6. Step 6: Final answer
    x = 191,864,975.25

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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.