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Finding the Fourth Proportional to 248,131.50, 372,147.84 and 70,639.98

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Solution

The fourth proportional to 248,131.50, 372,147.84 and 70,639.98 is: 105,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,131.50 : 372,147.84 = 70,639.98 : x
  2. Step 2: Convert to fraction form
    248,131.50/372,147.84 = 70,639.98/x
  3. Step 3: Cross multiply
    248,131.50x = 372,147.84 × 70,639.98
  4. Step 4: Simplify right side
    248,131.50x = 26,288,515,974.64
  5. Step 5: Solve for x
    x = 26,288,515,974.64/248,131.50
  6. Step 6: Final answer
    x = 105,945.90

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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.