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Finding the Fourth Proportional to 222,668, 307,301.28 and 122,085.44

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Solution

The fourth proportional to 222,668, 307,301.28 and 122,085.44 is: 168,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,668 : 307,301.28 = 122,085.44 : x
  2. Step 2: Convert to fraction form
    222,668/307,301.28 = 122,085.44/x
  3. Step 3: Cross multiply
    222,668x = 307,301.28 × 122,085.44
  4. Step 4: Simplify right side
    222,668x = 37,517,011,981.36
  5. Step 5: Solve for x
    x = 37,517,011,981.36/222,668
  6. Step 6: Final answer
    x = 168,488.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.