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Finding the Fourth Proportional to 325,649.79, 449,005.83 and 280,249.72

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Solution

The fourth proportional to 325,649.79, 449,005.83 and 280,249.72 is: 386,408.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,649.79 : 449,005.83 = 280,249.72 : x
  2. Step 2: Convert to fraction form
    325,649.79/449,005.83 = 280,249.72/x
  3. Step 3: Cross multiply
    325,649.79x = 449,005.83 × 280,249.72
  4. Step 4: Simplify right side
    325,649.79x = 125,833,758,135.87
  5. Step 5: Solve for x
    x = 125,833,758,135.87/325,649.79
  6. Step 6: Final answer
    x = 386,408.23

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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.