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Finding the Fourth Proportional to 422,620.84, 634,005.07 and 185,957.37

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Solution

The fourth proportional to 422,620.84, 634,005.07 and 185,957.37 is: 278,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,620.84 : 634,005.07 = 185,957.37 : x
  2. Step 2: Convert to fraction form
    422,620.84/634,005.07 = 185,957.37/x
  3. Step 3: Cross multiply
    422,620.84x = 634,005.07 × 185,957.37
  4. Step 4: Simplify right side
    422,620.84x = 117,897,915,964.98
  5. Step 5: Solve for x
    x = 117,897,915,964.98/422,620.84
  6. Step 6: Final answer
    x = 278,968.53

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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.