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Finding the Fourth Proportional to 248,738.45, 372,991.03 and 90,856.49

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Solution

The fourth proportional to 248,738.45, 372,991.03 and 90,856.49 is: 136,242.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,738.45 : 372,991.03 = 90,856.49 : x
  2. Step 2: Convert to fraction form
    248,738.45/372,991.03 = 90,856.49/x
  3. Step 3: Cross multiply
    248,738.45x = 372,991.03 × 90,856.49
  4. Step 4: Simplify right side
    248,738.45x = 33,888,653,695.19
  5. Step 5: Solve for x
    x = 33,888,653,695.19/248,738.45
  6. Step 6: Final answer
    x = 136,242.12

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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.