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Finding the Fourth Proportional to 393,470.31, 590,392.19 and 203,895.24

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Solution

The fourth proportional to 393,470.31, 590,392.19 and 203,895.24 is: 305,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,470.31 : 590,392.19 = 203,895.24 : x
  2. Step 2: Convert to fraction form
    393,470.31/590,392.19 = 203,895.24/x
  3. Step 3: Cross multiply
    393,470.31x = 590,392.19 × 203,895.24
  4. Step 4: Simplify right side
    393,470.31x = 120,378,157,274.18
  5. Step 5: Solve for x
    x = 120,378,157,274.18/393,470.31
  6. Step 6: Final answer
    x = 305,939.62

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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.