Home / 215,651,302.30-323,147,793.21-128,040,295.60

Finding the Fourth Proportional to 215,651,302.30, 323,147,793.21 and 128,040,295.60

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Solution

The fourth proportional to 215,651,302.30, 323,147,793.21 and 128,040,295.60 is: 191,865,008.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,651,302.30 : 323,147,793.21 = 128,040,295.60 : x
  2. Step 2: Convert to fraction form
    215,651,302.30/323,147,793.21 = 128,040,295.60/x
  3. Step 3: Cross multiply
    215,651,302.30x = 323,147,793.21 × 128,040,295.60
  4. Step 4: Simplify right side
    215,651,302.30x = 41,375,938,965,096,072
  5. Step 5: Solve for x
    x = 41,375,938,965,096,072/215,651,302.30
  6. Step 6: Final answer
    x = 191,865,008.58

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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.