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Finding the Fourth Proportional to 272,876.49, 408,559.01 and 139,469.49

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Solution

The fourth proportional to 272,876.49, 408,559.01 and 139,469.49 is: 208,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,876.49 : 408,559.01 = 139,469.49 : x
  2. Step 2: Convert to fraction form
    272,876.49/408,559.01 = 139,469.49/x
  3. Step 3: Cross multiply
    272,876.49x = 408,559.01 × 139,469.49
  4. Step 4: Simplify right side
    272,876.49x = 56,981,516,062.26
  5. Step 5: Solve for x
    x = 56,981,516,062.26/272,876.49
  6. Step 6: Final answer
    x = 208,817.97

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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.