Finding the Fourth Proportional to 208,589.07, 287,858.99 and 117,943.06
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Solution
The fourth proportional to 208,589.07, 287,858.99 and 117,943.06 is: 162,764.86
Step by Step Solution
- Step 1: Write the proportion equation
208,589.07 : 287,858.99 = 117,943.06 : x - Step 2: Convert to fraction form
208,589.07/287,858.99 = 117,943.06/x - Step 3: Cross multiply
208,589.07x = 287,858.99 × 117,943.06 - Step 4: Simplify right side
208,589.07x = 33,950,970,721.94 - Step 5: Solve for x
x = 33,950,970,721.94/208,589.07 - Step 6: Final answer
x = 162,764.86
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1.5x scale
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.