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Finding the Fourth Proportional to 388,930.40, 582,704.40 and 333,634.40

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Solution

The fourth proportional to 388,930.40, 582,704.40 and 333,634.40 is: 499,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,930.40 : 582,704.40 = 333,634.40 : x
  2. Step 2: Convert to fraction form
    388,930.40/582,704.40 = 333,634.40/x
  3. Step 3: Cross multiply
    388,930.40x = 582,704.40 × 333,634.40
  4. Step 4: Simplify right side
    388,930.40x = 194,410,232,871.36
  5. Step 5: Solve for x
    x = 194,410,232,871.36/388,930.40
  6. Step 6: Final answer
    x = 499,858.67

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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.