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Finding the Fourth Proportional to 274,260.48, 378,514.50 and 153,408.48

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Solution

The fourth proportional to 274,260.48, 378,514.50 and 153,408.48 is: 211,723.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,260.48 : 378,514.50 = 153,408.48 : x
  2. Step 2: Convert to fraction form
    274,260.48/378,514.50 = 153,408.48/x
  3. Step 3: Cross multiply
    274,260.48x = 378,514.50 × 153,408.48
  4. Step 4: Simplify right side
    274,260.48x = 58,067,334,102.96
  5. Step 5: Solve for x
    x = 58,067,334,102.96/274,260.48
  6. Step 6: Final answer
    x = 211,723.30

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1.5x scale

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.