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Finding the Fourth Proportional to 222,792, 307,467.54 and 122,190

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Solution

The fourth proportional to 222,792, 307,467.54 and 122,190 is: 168,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,792 : 307,467.54 = 122,190 : x
  2. Step 2: Convert to fraction form
    222,792/307,467.54 = 122,190/x
  3. Step 3: Cross multiply
    222,792x = 307,467.54 × 122,190
  4. Step 4: Simplify right side
    222,792x = 37,569,458,712.60
  5. Step 5: Solve for x
    x = 37,569,458,712.60/222,792
  6. Step 6: Final answer
    x = 168,630.20

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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.