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Finding the Fourth Proportional to 402,853.50, 555,942.44 and 221,568.41

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Solution

The fourth proportional to 402,853.50, 555,942.44 and 221,568.41 is: 305,766.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,853.50 : 555,942.44 = 221,568.41 : x
  2. Step 2: Convert to fraction form
    402,853.50/555,942.44 = 221,568.41/x
  3. Step 3: Cross multiply
    402,853.50x = 555,942.44 × 221,568.41
  4. Step 4: Simplify right side
    402,853.50x = 123,179,283,179.78
  5. Step 5: Solve for x
    x = 123,179,283,179.78/402,853.50
  6. Step 6: Final answer
    x = 305,766.94

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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.