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Finding the Fourth Proportional to 275,155.14, 379,553.18 and 173,018.90

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Solution

The fourth proportional to 275,155.14, 379,553.18 and 173,018.90 is: 238,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,155.14 : 379,553.18 = 173,018.90 : x
  2. Step 2: Convert to fraction form
    275,155.14/379,553.18 = 173,018.90/x
  3. Step 3: Cross multiply
    275,155.14x = 379,553.18 × 173,018.90
  4. Step 4: Simplify right side
    275,155.14x = 65,669,873,695.10
  5. Step 5: Solve for x
    x = 65,669,873,695.10/275,155.14
  6. Step 6: Final answer
    x = 238,664.90

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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.