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Finding the Fourth Proportional to 248,266.56, 372,309.12 and 90,448.32

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Solution

The fourth proportional to 248,266.56, 372,309.12 and 90,448.32 is: 135,639.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,266.56 : 372,309.12 = 90,448.32 : x
  2. Step 2: Convert to fraction form
    248,266.56/372,309.12 = 90,448.32/x
  3. Step 3: Cross multiply
    248,266.56x = 372,309.12 × 90,448.32
  4. Step 4: Simplify right side
    248,266.56x = 33,674,734,424.68
  5. Step 5: Solve for x
    x = 33,674,734,424.68/248,266.56
  6. Step 6: Final answer
    x = 135,639.43

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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.