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Finding the Fourth Proportional to 393,252.94, 542,735.22 and 223,512.58

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Solution

The fourth proportional to 393,252.94, 542,735.22 and 223,512.58 is: 308,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,252.94 : 542,735.22 = 223,512.58 : x
  2. Step 2: Convert to fraction form
    393,252.94/542,735.22 = 223,512.58/x
  3. Step 3: Cross multiply
    393,252.94x = 542,735.22 × 223,512.58
  4. Step 4: Simplify right side
    393,252.94x = 121,308,149,279.07
  5. Step 5: Solve for x
    x = 121,308,149,279.07/393,252.94
  6. Step 6: Final answer
    x = 308,473.60

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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.