Finding the Fourth Proportional to 256,519,803.96, 353,987,845.70 and 139,042,611.94
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Solution
The fourth proportional to 256,519,803.96, 353,987,845.70 and 139,042,611.94 is: 191,873,663.95
Step by Step Solution
- Step 1: Write the proportion equation
256,519,803.96 : 353,987,845.70 = 139,042,611.94 : x - Step 2: Convert to fraction form
256,519,803.96/353,987,845.70 = 139,042,611.94/x - Step 3: Cross multiply
256,519,803.96x = 353,987,845.70 × 139,042,611.94 - Step 4: Simplify right side
256,519,803.96x = 49,219,394,661,141,696 - Step 5: Solve for x
x = 49,219,394,661,141,696/256,519,803.96 - Step 6: Final answer
x = 191,873,663.95
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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.