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Finding the Fourth Proportional to 248,315, 372,530.88 and 82,103

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Solution

The fourth proportional to 248,315, 372,530.88 and 82,103 is: 123,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,315 : 372,530.88 = 82,103 : x
  2. Step 2: Convert to fraction form
    248,315/372,530.88 = 82,103/x
  3. Step 3: Cross multiply
    248,315x = 372,530.88 × 82,103
  4. Step 4: Simplify right side
    248,315x = 30,585,902,840.64
  5. Step 5: Solve for x
    x = 30,585,902,840.64/248,315
  6. Step 6: Final answer
    x = 123,173.80

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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.