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Finding the Fourth Proportional to 215,754.32, 323,536.44 and 115,884.56

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Solution

The fourth proportional to 215,754.32, 323,536.44 and 115,884.56 is: 173,775.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,754.32 : 323,536.44 = 115,884.56 : x
  2. Step 2: Convert to fraction form
    215,754.32/323,536.44 = 115,884.56/x
  3. Step 3: Cross multiply
    215,754.32x = 323,536.44 × 115,884.56
  4. Step 4: Simplify right side
    215,754.32x = 37,492,877,993.37
  5. Step 5: Solve for x
    x = 37,492,877,993.37/215,754.32
  6. Step 6: Final answer
    x = 173,775.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.