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Finding the Fourth Proportional to 285,979.44, 428,885.64 and 108,358.32

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Solution

The fourth proportional to 285,979.44, 428,885.64 and 108,358.32 is: 162,505.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,979.44 : 428,885.64 = 108,358.32 : x
  2. Step 2: Convert to fraction form
    285,979.44/428,885.64 = 108,358.32/x
  3. Step 3: Cross multiply
    285,979.44x = 428,885.64 × 108,358.32
  4. Step 4: Simplify right side
    285,979.44x = 46,473,327,422.52
  5. Step 5: Solve for x
    x = 46,473,327,422.52/285,979.44
  6. Step 6: Final answer
    x = 162,505.83

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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.