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Finding the Fourth Proportional to 422,915.26, 634,489.98 and 195,280.35

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Solution

The fourth proportional to 422,915.26, 634,489.98 and 195,280.35 is: 292,974.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,915.26 : 634,489.98 = 195,280.35 : x
  2. Step 2: Convert to fraction form
    422,915.26/634,489.98 = 195,280.35/x
  3. Step 3: Cross multiply
    422,915.26x = 634,489.98 × 195,280.35
  4. Step 4: Simplify right side
    422,915.26x = 123,903,425,365.89
  5. Step 5: Solve for x
    x = 123,903,425,365.89/422,915.26
  6. Step 6: Final answer
    x = 292,974.59

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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.