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Finding the Fourth Proportional to 275,216.58, 379,792.89 and 154,355.22

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Solution

The fourth proportional to 275,216.58, 379,792.89 and 154,355.22 is: 213,006.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,216.58 : 379,792.89 = 154,355.22 : x
  2. Step 2: Convert to fraction form
    275,216.58/379,792.89 = 154,355.22/x
  3. Step 3: Cross multiply
    275,216.58x = 379,792.89 × 154,355.22
  4. Step 4: Simplify right side
    275,216.58x = 58,623,015,090.39
  5. Step 5: Solve for x
    x = 58,623,015,090.39/275,216.58
  6. Step 6: Final answer
    x = 213,006.84

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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.