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Finding the Fourth Proportional to 285,888.71, 394,268.26 and 178,468.71

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Solution

The fourth proportional to 285,888.71, 394,268.26 and 178,468.71 is: 246,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,888.71 : 394,268.26 = 178,468.71 : x
  2. Step 2: Convert to fraction form
    285,888.71/394,268.26 = 178,468.71/x
  3. Step 3: Cross multiply
    285,888.71x = 394,268.26 × 178,468.71
  4. Step 4: Simplify right side
    285,888.71x = 70,364,546,863.80
  5. Step 5: Solve for x
    x = 70,364,546,863.80/285,888.71
  6. Step 6: Final answer
    x = 246,125.66

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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.