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Finding the Fourth Proportional to 215,958.96, 298,037.07 and 120,465.45

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Solution

The fourth proportional to 215,958.96, 298,037.07 and 120,465.45 is: 166,249.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,958.96 : 298,037.07 = 120,465.45 : x
  2. Step 2: Convert to fraction form
    215,958.96/298,037.07 = 120,465.45/x
  3. Step 3: Cross multiply
    215,958.96x = 298,037.07 × 120,465.45
  4. Step 4: Simplify right side
    215,958.96x = 35,903,169,754.23
  5. Step 5: Solve for x
    x = 35,903,169,754.23/215,958.96
  6. Step 6: Final answer
    x = 166,249.97

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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.