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Finding the Fourth Proportional to 445,031.69, 667,611.16 and 137,309.74

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Solution

The fourth proportional to 445,031.69, 667,611.16 and 137,309.74 is: 205,984.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,031.69 : 667,611.16 = 137,309.74 : x
  2. Step 2: Convert to fraction form
    445,031.69/667,611.16 = 137,309.74/x
  3. Step 3: Cross multiply
    445,031.69x = 667,611.16 × 137,309.74
  4. Step 4: Simplify right side
    445,031.69x = 91,669,514,800.70
  5. Step 5: Solve for x
    x = 91,669,514,800.70/445,031.69
  6. Step 6: Final answer
    x = 205,984.24

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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.