Home / 291,961.21-402,906.78-171,078.43

Finding the Fourth Proportional to 291,961.21, 402,906.78 and 171,078.43

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Solution

The fourth proportional to 291,961.21, 402,906.78 and 171,078.43 is: 236,088.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,961.21 : 402,906.78 = 171,078.43 : x
  2. Step 2: Convert to fraction form
    291,961.21/402,906.78 = 171,078.43/x
  3. Step 3: Cross multiply
    291,961.21x = 402,906.78 × 171,078.43
  4. Step 4: Simplify right side
    291,961.21x = 68,928,659,358.76
  5. Step 5: Solve for x
    x = 68,928,659,358.76/291,961.21
  6. Step 6: Final answer
    x = 236,088.42

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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.