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Finding the Fourth Proportional to 215,249.94, 296,945.53 and 138,793.60

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Solution

The fourth proportional to 215,249.94, 296,945.53 and 138,793.60 is: 191,471.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,249.94 : 296,945.53 = 138,793.60 : x
  2. Step 2: Convert to fraction form
    215,249.94/296,945.53 = 138,793.60/x
  3. Step 3: Cross multiply
    215,249.94x = 296,945.53 × 138,793.60
  4. Step 4: Simplify right side
    215,249.94x = 41,214,137,856.84
  5. Step 5: Solve for x
    x = 41,214,137,856.84/215,249.94
  6. Step 6: Final answer
    x = 191,471.08

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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.