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Finding the Fourth Proportional to 427,233.40, 640,331.70 and 190,324.60

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Solution

The fourth proportional to 427,233.40, 640,331.70 and 190,324.60 is: 285,255.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,233.40 : 640,331.70 = 190,324.60 : x
  2. Step 2: Convert to fraction form
    427,233.40/640,331.70 = 190,324.60/x
  3. Step 3: Cross multiply
    427,233.40x = 640,331.70 × 190,324.60
  4. Step 4: Simplify right side
    427,233.40x = 121,870,874,669.82
  5. Step 5: Solve for x
    x = 121,870,874,669.82/427,233.40
  6. Step 6: Final answer
    x = 285,255.96

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.