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Finding the Fourth Proportional to 285,699.89, 394,186.09 and 225,082.40

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Solution

The fourth proportional to 285,699.89, 394,186.09 and 225,082.40 is: 310,550.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,699.89 : 394,186.09 = 225,082.40 : x
  2. Step 2: Convert to fraction form
    285,699.89/394,186.09 = 225,082.40/x
  3. Step 3: Cross multiply
    285,699.89x = 394,186.09 × 225,082.40
  4. Step 4: Simplify right side
    285,699.89x = 88,724,351,606.58
  5. Step 5: Solve for x
    x = 88,724,351,606.58/285,699.89
  6. Step 6: Final answer
    x = 310,550.88

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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.