Home / 445,031.45-667,610.78-137,309.50

Finding the Fourth Proportional to 445,031.45, 667,610.78 and 137,309.50

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Solution

The fourth proportional to 445,031.45, 667,610.78 and 137,309.50 is: 205,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,031.45 : 667,610.78 = 137,309.50 : x
  2. Step 2: Convert to fraction form
    445,031.45/667,610.78 = 137,309.50/x
  3. Step 3: Cross multiply
    445,031.45x = 667,610.78 × 137,309.50
  4. Step 4: Simplify right side
    445,031.45x = 91,669,301,070.66
  5. Step 5: Solve for x
    x = 91,669,301,070.66/445,031.45
  6. Step 6: Final answer
    x = 205,983.87

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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.