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Finding the Fourth Proportional to 248,415.48, 372,629.32 and 90,643.88

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Solution

The fourth proportional to 248,415.48, 372,629.32 and 90,643.88 is: 135,968.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,415.48 : 372,629.32 = 90,643.88 : x
  2. Step 2: Convert to fraction form
    248,415.48/372,629.32 = 90,643.88/x
  3. Step 3: Cross multiply
    248,415.48x = 372,629.32 × 90,643.88
  4. Step 4: Simplify right side
    248,415.48x = 33,776,567,366.56
  5. Step 5: Solve for x
    x = 33,776,567,366.56/248,415.48
  6. Step 6: Final answer
    x = 135,968.05

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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.