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Finding the Fourth Proportional to 243,203.33, 335,619.76 and 135,772.42

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Solution

The fourth proportional to 243,203.33, 335,619.76 and 135,772.42 is: 187,365.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,203.33 : 335,619.76 = 135,772.42 : x
  2. Step 2: Convert to fraction form
    243,203.33/335,619.76 = 135,772.42/x
  3. Step 3: Cross multiply
    243,203.33x = 335,619.76 × 135,772.42
  4. Step 4: Simplify right side
    243,203.33x = 45,567,907,015.02
  5. Step 5: Solve for x
    x = 45,567,907,015.02/243,203.33
  6. Step 6: Final answer
    x = 187,365.47

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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.