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Finding the Fourth Proportional to 393,313.92, 542,773.44 and 223,548

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Solution

The fourth proportional to 393,313.92, 542,773.44 and 223,548 is: 308,496.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,313.92 : 542,773.44 = 223,548 : x
  2. Step 2: Convert to fraction form
    393,313.92/542,773.44 = 223,548/x
  3. Step 3: Cross multiply
    393,313.92x = 542,773.44 × 223,548
  4. Step 4: Simplify right side
    393,313.92x = 121,335,916,965.12
  5. Step 5: Solve for x
    x = 121,335,916,965.12/393,313.92
  6. Step 6: Final answer
    x = 308,496.37

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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.