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Finding the Fourth Proportional to 274,260.72, 378,514.85 and 153,408.72

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Solution

The fourth proportional to 274,260.72, 378,514.85 and 153,408.72 is: 211,723.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,260.72 : 378,514.85 = 153,408.72 : x
  2. Step 2: Convert to fraction form
    274,260.72/378,514.85 = 153,408.72/x
  3. Step 3: Cross multiply
    274,260.72x = 378,514.85 × 153,408.72
  4. Step 4: Simplify right side
    274,260.72x = 58,067,477,872.45
  5. Step 5: Solve for x
    x = 58,067,477,872.45/274,260.72
  6. Step 6: Final answer
    x = 211,723.64

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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.