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Finding the Fourth Proportional to 640,600.92, 960,576.98 and 213,984.65

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Solution

The fourth proportional to 640,600.92, 960,576.98 and 213,984.65 is: 320,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,600.92 : 960,576.98 = 213,984.65 : x
  2. Step 2: Convert to fraction form
    640,600.92/960,576.98 = 213,984.65/x
  3. Step 3: Cross multiply
    640,600.92x = 960,576.98 × 213,984.65
  4. Step 4: Simplify right side
    640,600.92x = 205,548,730,194.88
  5. Step 5: Solve for x
    x = 205,548,730,194.88/640,600.92
  6. Step 6: Final answer
    x = 320,868.62

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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.