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Finding the Fourth Proportional to 393,469.31, 590,390.69 and 203,894.24

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Solution

The fourth proportional to 393,469.31, 590,390.69 and 203,894.24 is: 305,938.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,469.31 : 590,390.69 = 203,894.24 : x
  2. Step 2: Convert to fraction form
    393,469.31/590,390.69 = 203,894.24/x
  3. Step 3: Cross multiply
    393,469.31x = 590,390.69 × 203,894.24
  4. Step 4: Simplify right side
    393,469.31x = 120,377,261,040.63
  5. Step 5: Solve for x
    x = 120,377,261,040.63/393,469.31
  6. Step 6: Final answer
    x = 305,938.12

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1.5x scale

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.