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Finding the Fourth Proportional to 275,195.66, 379,418.45 and 178,228.19

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Solution

The fourth proportional to 275,195.66, 379,418.45 and 178,228.19 is: 245,727.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,195.66 : 379,418.45 = 178,228.19 : x
  2. Step 2: Convert to fraction form
    275,195.66/379,418.45 = 178,228.19/x
  3. Step 3: Cross multiply
    275,195.66x = 379,418.45 × 178,228.19
  4. Step 4: Simplify right side
    275,195.66x = 67,623,060,807.87
  5. Step 5: Solve for x
    x = 67,623,060,807.87/275,195.66
  6. Step 6: Final answer
    x = 245,727.21

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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.