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Finding the Fourth Proportional to 443,611.20, 665,287.20 and 159,268.80

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Solution

The fourth proportional to 443,611.20, 665,287.20 and 159,268.80 is: 238,856.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,611.20 : 665,287.20 = 159,268.80 : x
  2. Step 2: Convert to fraction form
    443,611.20/665,287.20 = 159,268.80/x
  3. Step 3: Cross multiply
    443,611.20x = 665,287.20 × 159,268.80
  4. Step 4: Simplify right side
    443,611.20x = 105,959,493,999.36
  5. Step 5: Solve for x
    x = 105,959,493,999.36/443,611.20
  6. Step 6: Final answer
    x = 238,856.67

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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.