Finding the Fourth Proportional to 291,876,510.25, 402,789,571.37 and 159,717,517.68
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Solution
The fourth proportional to 291,876,510.25, 402,789,571.37 and 159,717,517.68 is: 220,410,167.41
Step by Step Solution
- Step 1: Write the proportion equation
291,876,510.25 : 402,789,571.37 = 159,717,517.68 : x - Step 2: Convert to fraction form
291,876,510.25/402,789,571.37 = 159,717,517.68/x - Step 3: Cross multiply
291,876,510.25x = 402,789,571.37 × 159,717,517.68 - Step 4: Simplify right side
291,876,510.25x = 64,332,550,485,809,016 - Step 5: Solve for x
x = 64,332,550,485,809,016/291,876,510.25 - Step 6: Final answer
x = 220,410,167.41
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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.