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Finding the Fourth Proportional to 322,640.64, 483,984 and 85,982.08

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Solution

The fourth proportional to 322,640.64, 483,984 and 85,982.08 is: 128,979.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,640.64 : 483,984 = 85,982.08 : x
  2. Step 2: Convert to fraction form
    322,640.64/483,984 = 85,982.08/x
  3. Step 3: Cross multiply
    322,640.64x = 483,984 × 85,982.08
  4. Step 4: Simplify right side
    322,640.64x = 41,613,951,006.72
  5. Step 5: Solve for x
    x = 41,613,951,006.72/322,640.64
  6. Step 6: Final answer
    x = 128,979.26

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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.