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Finding the Fourth Proportional to 393,364.37, 542,928.80 and 250,096.43

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Solution

The fourth proportional to 393,364.37, 542,928.80 and 250,096.43 is: 345,187.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,364.37 : 542,928.80 = 250,096.43 : x
  2. Step 2: Convert to fraction form
    393,364.37/542,928.80 = 250,096.43/x
  3. Step 3: Cross multiply
    393,364.37x = 542,928.80 × 250,096.43
  4. Step 4: Simplify right side
    393,364.37x = 135,784,556,606.75
  5. Step 5: Solve for x
    x = 135,784,556,606.75/393,364.37
  6. Step 6: Final answer
    x = 345,187.73

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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.