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Finding the Fourth Proportional to 248,311.95, 372,406.26 and 70,820.49

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Solution

The fourth proportional to 248,311.95, 372,406.26 and 70,820.49 is: 106,213.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,311.95 : 372,406.26 = 70,820.49 : x
  2. Step 2: Convert to fraction form
    248,311.95/372,406.26 = 70,820.49/x
  3. Step 3: Cross multiply
    248,311.95x = 372,406.26 × 70,820.49
  4. Step 4: Simplify right side
    248,311.95x = 26,373,993,812.27
  5. Step 5: Solve for x
    x = 26,373,993,812.27/248,311.95
  6. Step 6: Final answer
    x = 106,213.15

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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.