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Finding the Fourth Proportional to 422,942.88, 634,213.44 and 245,504.28

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Solution

The fourth proportional to 422,942.88, 634,213.44 and 245,504.28 is: 368,139.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,942.88 : 634,213.44 = 245,504.28 : x
  2. Step 2: Convert to fraction form
    422,942.88/634,213.44 = 245,504.28/x
  3. Step 3: Cross multiply
    422,942.88x = 634,213.44 × 245,504.28
  4. Step 4: Simplify right side
    422,942.88x = 155,702,113,953.52
  5. Step 5: Solve for x
    x = 155,702,113,953.52/422,942.88
  6. Step 6: Final answer
    x = 368,139.82

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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.