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Finding the Fourth Proportional to 330,571.50, 456,188.67 and 196,435.50

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Solution

The fourth proportional to 330,571.50, 456,188.67 and 196,435.50 is: 271,080.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,571.50 : 456,188.67 = 196,435.50 : x
  2. Step 2: Convert to fraction form
    330,571.50/456,188.67 = 196,435.50/x
  3. Step 3: Cross multiply
    330,571.50x = 456,188.67 × 196,435.50
  4. Step 4: Simplify right side
    330,571.50x = 89,611,649,485.79
  5. Step 5: Solve for x
    x = 89,611,649,485.79/330,571.50
  6. Step 6: Final answer
    x = 271,080.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.