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Finding the Fourth Proportional to 291,215.85, 401,877.03 and 163,891.44

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Solution

The fourth proportional to 291,215.85, 401,877.03 and 163,891.44 is: 226,169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,215.85 : 401,877.03 = 163,891.44 : x
  2. Step 2: Convert to fraction form
    291,215.85/401,877.03 = 163,891.44/x
  3. Step 3: Cross multiply
    291,215.85x = 401,877.03 × 163,891.44
  4. Step 4: Simplify right side
    291,215.85x = 65,864,205,149.62
  5. Step 5: Solve for x
    x = 65,864,205,149.62/291,215.85
  6. Step 6: Final answer
    x = 226,169.71

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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.