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Finding the Fourth Proportional to 248,261.82, 372,392.16 and 90,425.76

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Solution

The fourth proportional to 248,261.82, 372,392.16 and 90,425.76 is: 135,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,261.82 : 372,392.16 = 90,425.76 : x
  2. Step 2: Convert to fraction form
    248,261.82/372,392.16 = 90,425.76/x
  3. Step 3: Cross multiply
    248,261.82x = 372,392.16 × 90,425.76
  4. Step 4: Simplify right side
    248,261.82x = 33,673,844,086.04
  5. Step 5: Solve for x
    x = 33,673,844,086.04/248,261.82
  6. Step 6: Final answer
    x = 135,638.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.