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Finding the Fourth Proportional to 393,674.56, 543,300.96 and 223,898.56

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Solution

The fourth proportional to 393,674.56, 543,300.96 and 223,898.56 is: 308,997.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,674.56 : 543,300.96 = 223,898.56 : x
  2. Step 2: Convert to fraction form
    393,674.56/543,300.96 = 223,898.56/x
  3. Step 3: Cross multiply
    393,674.56x = 543,300.96 × 223,898.56
  4. Step 4: Simplify right side
    393,674.56x = 121,644,302,590.62
  5. Step 5: Solve for x
    x = 121,644,302,590.62/393,674.56
  6. Step 6: Final answer
    x = 308,997.11

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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.