Finding the Fourth Proportional to 287,137.96, 396,246.42 and 159,813.60
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Solution
The fourth proportional to 287,137.96, 396,246.42 and 159,813.60 is: 220,540.56
Step by Step Solution
- Step 1: Write the proportion equation
287,137.96 : 396,246.42 = 159,813.60 : x - Step 2: Convert to fraction form
287,137.96/396,246.42 = 159,813.60/x - Step 3: Cross multiply
287,137.96x = 396,246.42 × 159,813.60 - Step 4: Simplify right side
287,137.96x = 63,325,566,867.31 - Step 5: Solve for x
x = 63,325,566,867.31/287,137.96 - Step 6: Final answer
x = 220,540.56
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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.