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Finding the Fourth Proportional to 275,563.03, 380,247.61 and 154,717.61

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Solution

The fourth proportional to 275,563.03, 380,247.61 and 154,717.61 is: 213,493.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,563.03 : 380,247.61 = 154,717.61 : x
  2. Step 2: Convert to fraction form
    275,563.03/380,247.61 = 154,717.61/x
  3. Step 3: Cross multiply
    275,563.03x = 380,247.61 × 154,717.61
  4. Step 4: Simplify right side
    275,563.03x = 58,831,000,653.82
  5. Step 5: Solve for x
    x = 58,831,000,653.82/275,563.03
  6. Step 6: Final answer
    x = 213,493.81

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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.