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Finding the Fourth Proportional to 661,049.01, 991,596.92 and 211,711.41

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Solution

The fourth proportional to 661,049.01, 991,596.92 and 211,711.41 is: 317,574.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,049.01 : 991,596.92 = 211,711.41 : x
  2. Step 2: Convert to fraction form
    661,049.01/991,596.92 = 211,711.41/x
  3. Step 3: Cross multiply
    661,049.01x = 991,596.92 × 211,711.41
  4. Step 4: Simplify right side
    661,049.01x = 209,932,381,026.30
  5. Step 5: Solve for x
    x = 209,932,381,026.30/661,049.01
  6. Step 6: Final answer
    x = 317,574.61

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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.