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Finding the Fourth Proportional to 215,249.78, 322,874.94 and 102,903.59

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Solution

The fourth proportional to 215,249.78, 322,874.94 and 102,903.59 is: 154,355.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,249.78 : 322,874.94 = 102,903.59 : x
  2. Step 2: Convert to fraction form
    215,249.78/322,874.94 = 102,903.59/x
  3. Step 3: Cross multiply
    215,249.78x = 322,874.94 × 102,903.59
  4. Step 4: Simplify right side
    215,249.78x = 33,224,990,447.03
  5. Step 5: Solve for x
    x = 33,224,990,447.03/215,249.78
  6. Step 6: Final answer
    x = 154,355.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.