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Finding the Fourth Proportional to 247,788.88, 371,728.12 and 90,238.48

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Solution

The fourth proportional to 247,788.88, 371,728.12 and 90,238.48 is: 135,374.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,788.88 : 371,728.12 = 90,238.48 : x
  2. Step 2: Convert to fraction form
    247,788.88/371,728.12 = 90,238.48/x
  3. Step 3: Cross multiply
    247,788.88x = 371,728.12 × 90,238.48
  4. Step 4: Simplify right side
    247,788.88x = 33,544,180,522.06
  5. Step 5: Solve for x
    x = 33,544,180,522.06/247,788.88
  6. Step 6: Final answer
    x = 135,374.04

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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.