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Finding the Fourth Proportional to 248,756.40, 372,724.20 and 143,391.60

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Solution

The fourth proportional to 248,756.40, 372,724.20 and 143,391.60 is: 214,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,756.40 : 372,724.20 = 143,391.60 : x
  2. Step 2: Convert to fraction form
    248,756.40/372,724.20 = 143,391.60/x
  3. Step 3: Cross multiply
    248,756.40x = 372,724.20 × 143,391.60
  4. Step 4: Simplify right side
    248,756.40x = 53,445,519,396.72
  5. Step 5: Solve for x
    x = 53,445,519,396.72/248,756.40
  6. Step 6: Final answer
    x = 214,850.83

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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.