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Finding the Fourth Proportional to 646,960.48, 970,555.94 and 220,472.66

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Solution

The fourth proportional to 646,960.48, 970,555.94 and 220,472.66 is: 330,748.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,960.48 : 970,555.94 = 220,472.66 : x
  2. Step 2: Convert to fraction form
    646,960.48/970,555.94 = 220,472.66/x
  3. Step 3: Cross multiply
    646,960.48x = 970,555.94 × 220,472.66
  4. Step 4: Simplify right side
    646,960.48x = 213,981,049,770.60
  5. Step 5: Solve for x
    x = 213,981,049,770.60/646,960.48
  6. Step 6: Final answer
    x = 330,748.25

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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.