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Finding the Fourth Proportional to 206,873.86, 310,287.54 and 57,135.44

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Solution

The fourth proportional to 206,873.86, 310,287.54 and 57,135.44 is: 85,696.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,873.86 : 310,287.54 = 57,135.44 : x
  2. Step 2: Convert to fraction form
    206,873.86/310,287.54 = 57,135.44/x
  3. Step 3: Cross multiply
    206,873.86x = 310,287.54 × 57,135.44
  4. Step 4: Simplify right side
    206,873.86x = 17,728,415,124.42
  5. Step 5: Solve for x
    x = 17,728,415,124.42/206,873.86
  6. Step 6: Final answer
    x = 85,696.74

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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.