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Finding the Fourth Proportional to 248,408.97, 372,619.58 and 90,637.40

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Solution

The fourth proportional to 248,408.97, 372,619.58 and 90,637.40 is: 135,958.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,408.97 : 372,619.58 = 90,637.40 : x
  2. Step 2: Convert to fraction form
    248,408.97/372,619.58 = 90,637.40/x
  3. Step 3: Cross multiply
    248,408.97x = 372,619.58 × 90,637.40
  4. Step 4: Simplify right side
    248,408.97x = 33,773,267,604.01
  5. Step 5: Solve for x
    x = 33,773,267,604.01/248,408.97
  6. Step 6: Final answer
    x = 135,958.33

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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.