Home / 257,536,672.40-386,305,008.60-85,040,109.20

Finding the Fourth Proportional to 257,536,672.40, 386,305,008.60 and 85,040,109.20

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Solution

The fourth proportional to 257,536,672.40, 386,305,008.60 and 85,040,109.20 is: 127,560,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,536,672.40 : 386,305,008.60 = 85,040,109.20 : x
  2. Step 2: Convert to fraction form
    257,536,672.40/386,305,008.60 = 85,040,109.20/x
  3. Step 3: Cross multiply
    257,536,672.40x = 386,305,008.60 × 85,040,109.20
  4. Step 4: Simplify right side
    257,536,672.40x = 32,851,420,115,850,944
  5. Step 5: Solve for x
    x = 32,851,420,115,850,944/257,536,672.40
  6. Step 6: Final answer
    x = 127,560,163.80

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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.