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Finding the Fourth Proportional to 306,286.52, 422,613.45 and 178,937.51

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Solution

The fourth proportional to 306,286.52, 422,613.45 and 178,937.51 is: 246,897.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,286.52 : 422,613.45 = 178,937.51 : x
  2. Step 2: Convert to fraction form
    306,286.52/422,613.45 = 178,937.51/x
  3. Step 3: Cross multiply
    306,286.52x = 422,613.45 × 178,937.51
  4. Step 4: Simplify right side
    306,286.52x = 75,621,396,322.44
  5. Step 5: Solve for x
    x = 75,621,396,322.44/306,286.52
  6. Step 6: Final answer
    x = 246,897.57

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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.