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Finding the Fourth Proportional to 253,956.68, 349,662.26 and 215,635.58

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Solution

The fourth proportional to 253,956.68, 349,662.26 and 215,635.58 is: 296,899.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,956.68 : 349,662.26 = 215,635.58 : x
  2. Step 2: Convert to fraction form
    253,956.68/349,662.26 = 215,635.58/x
  3. Step 3: Cross multiply
    253,956.68x = 349,662.26 × 215,635.58
  4. Step 4: Simplify right side
    253,956.68x = 75,399,623,161.03
  5. Step 5: Solve for x
    x = 75,399,623,161.03/253,956.68
  6. Step 6: Final answer
    x = 296,899.55

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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.