Finding the Fourth Proportional to 208,187.06, 287,311.05 and 117,509.99
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Solution
The fourth proportional to 208,187.06, 287,311.05 and 117,509.99 is: 162,171.07
Step by Step Solution
- Step 1: Write the proportion equation
208,187.06 : 287,311.05 = 117,509.99 : x - Step 2: Convert to fraction form
208,187.06/287,311.05 = 117,509.99/x - Step 3: Cross multiply
208,187.06x = 287,311.05 × 117,509.99 - Step 4: Simplify right side
208,187.06x = 33,761,917,175.83 - Step 5: Solve for x
x = 33,761,917,175.83/208,187.06 - Step 6: Final answer
x = 162,171.07
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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.