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Finding the Fourth Proportional to 641,480.66, 962,434.76 and 215,058.65

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Solution

The fourth proportional to 641,480.66, 962,434.76 and 215,058.65 is: 322,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,480.66 : 962,434.76 = 215,058.65 : x
  2. Step 2: Convert to fraction form
    641,480.66/962,434.76 = 215,058.65/x
  3. Step 3: Cross multiply
    641,480.66x = 962,434.76 × 215,058.65
  4. Step 4: Simplify right side
    641,480.66x = 206,979,915,520.91
  5. Step 5: Solve for x
    x = 206,979,915,520.91/641,480.66
  6. Step 6: Final answer
    x = 322,659.63

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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.