Home / 285,310.44-427,964.64-85,629.96

Finding the Fourth Proportional to 285,310.44, 427,964.64 and 85,629.96

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Solution

The fourth proportional to 285,310.44, 427,964.64 and 85,629.96 is: 128,444.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,310.44 : 427,964.64 = 85,629.96 : x
  2. Step 2: Convert to fraction form
    285,310.44/427,964.64 = 85,629.96/x
  3. Step 3: Cross multiply
    285,310.44x = 427,964.64 × 85,629.96
  4. Step 4: Simplify right side
    285,310.44x = 36,646,595,004.61
  5. Step 5: Solve for x
    x = 36,646,595,004.61/285,310.44
  6. Step 6: Final answer
    x = 128,444.63

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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.