Finding the Fourth Proportional to 287,129.98, 396,235.38 and 159,805.60
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Solution
The fourth proportional to 287,129.98, 396,235.38 and 159,805.60 is: 220,529.51
Step by Step Solution
- Step 1: Write the proportion equation
287,129.98 : 396,235.38 = 159,805.60 : x - Step 2: Convert to fraction form
287,129.98/396,235.38 = 159,805.60/x - Step 3: Cross multiply
287,129.98x = 396,235.38 × 159,805.60 - Step 4: Simplify right side
287,129.98x = 63,320,632,642.13 - Step 5: Solve for x
x = 63,320,632,642.13/287,129.98 - Step 6: Final answer
x = 220,529.51
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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.