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Finding the Fourth Proportional to 248,609.80, 372,968.70 and 90,838

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Solution

The fourth proportional to 248,609.80, 372,968.70 and 90,838 is: 136,276.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,609.80 : 372,968.70 = 90,838 : x
  2. Step 2: Convert to fraction form
    248,609.80/372,968.70 = 90,838/x
  3. Step 3: Cross multiply
    248,609.80x = 372,968.70 × 90,838
  4. Step 4: Simplify right side
    248,609.80x = 33,879,730,770.60
  5. Step 5: Solve for x
    x = 33,879,730,770.60/248,609.80
  6. Step 6: Final answer
    x = 136,276.73

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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.