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Finding the Fourth Proportional to 274,375.68, 378,616.86 and 153,507.48

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Solution

The fourth proportional to 274,375.68, 378,616.86 and 153,507.48 is: 211,828.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,375.68 : 378,616.86 = 153,507.48 : x
  2. Step 2: Convert to fraction form
    274,375.68/378,616.86 = 153,507.48/x
  3. Step 3: Cross multiply
    274,375.68x = 378,616.86 × 153,507.48
  4. Step 4: Simplify right side
    274,375.68x = 58,120,520,064.11
  5. Step 5: Solve for x
    x = 58,120,520,064.11/274,375.68
  6. Step 6: Final answer
    x = 211,828.25

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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.