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Finding the Fourth Proportional to 328,863.31, 453,523.37 and 218,286.39

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Solution

The fourth proportional to 328,863.31, 453,523.37 and 218,286.39 is: 301,030.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,863.31 : 453,523.37 = 218,286.39 : x
  2. Step 2: Convert to fraction form
    328,863.31/453,523.37 = 218,286.39/x
  3. Step 3: Cross multiply
    328,863.31x = 453,523.37 × 218,286.39
  4. Step 4: Simplify right side
    328,863.31x = 98,997,981,055.08
  5. Step 5: Solve for x
    x = 98,997,981,055.08/328,863.31
  6. Step 6: Final answer
    x = 301,030.79

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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.