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Finding the Fourth Proportional to 445,806, 668,817.04 and 256,387.60

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Solution

The fourth proportional to 445,806, 668,817.04 and 256,387.60 is: 384,643.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,806 : 668,817.04 = 256,387.60 : x
  2. Step 2: Convert to fraction form
    445,806/668,817.04 = 256,387.60/x
  3. Step 3: Cross multiply
    445,806x = 668,817.04 × 256,387.60
  4. Step 4: Simplify right side
    445,806x = 171,476,395,724.70
  5. Step 5: Solve for x
    x = 171,476,395,724.70/445,806
  6. Step 6: Final answer
    x = 384,643.53

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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.