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Finding the Fourth Proportional to 330,524.67, 455,956.19 and 215,870.43

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Solution

The fourth proportional to 330,524.67, 455,956.19 and 215,870.43 is: 297,791.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,524.67 : 455,956.19 = 215,870.43 : x
  2. Step 2: Convert to fraction form
    330,524.67/455,956.19 = 215,870.43/x
  3. Step 3: Cross multiply
    330,524.67x = 455,956.19 × 215,870.43
  4. Step 4: Simplify right side
    330,524.67x = 98,427,458,857.00
  5. Step 5: Solve for x
    x = 98,427,458,857.00/330,524.67
  6. Step 6: Final answer
    x = 297,791.56

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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.