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Finding the Fourth Proportional to 291,118.70, 401,715.24 and 163,791.56

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Solution

The fourth proportional to 291,118.70, 401,715.24 and 163,791.56 is: 226,016.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,118.70 : 401,715.24 = 163,791.56 : x
  2. Step 2: Convert to fraction form
    291,118.70/401,715.24 = 163,791.56/x
  3. Step 3: Cross multiply
    291,118.70x = 401,715.24 × 163,791.56
  4. Step 4: Simplify right side
    291,118.70x = 65,797,565,835.37
  5. Step 5: Solve for x
    x = 65,797,565,835.37/291,118.70
  6. Step 6: Final answer
    x = 226,016.28

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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.