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Finding the Fourth Proportional to 256,610.46, 384,891.04 and 79,069.80

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Solution

The fourth proportional to 256,610.46, 384,891.04 and 79,069.80 is: 118,597.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,610.46 : 384,891.04 = 79,069.80 : x
  2. Step 2: Convert to fraction form
    256,610.46/384,891.04 = 79,069.80/x
  3. Step 3: Cross multiply
    256,610.46x = 384,891.04 × 79,069.80
  4. Step 4: Simplify right side
    256,610.46x = 30,433,259,096.77
  5. Step 5: Solve for x
    x = 30,433,259,096.77/256,610.46
  6. Step 6: Final answer
    x = 118,597.11

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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.