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Finding the Fourth Proportional to 274,911.63, 379,399.32 and 154,064.16

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Solution

The fourth proportional to 274,911.63, 379,399.32 and 154,064.16 is: 212,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,911.63 : 379,399.32 = 154,064.16 : x
  2. Step 2: Convert to fraction form
    274,911.63/379,399.32 = 154,064.16/x
  3. Step 3: Cross multiply
    274,911.63x = 379,399.32 × 154,064.16
  4. Step 4: Simplify right side
    274,911.63x = 58,451,837,540.37
  5. Step 5: Solve for x
    x = 58,451,837,540.37/274,911.63
  6. Step 6: Final answer
    x = 212,620.46

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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.