Finding the Fourth Proportional to 256,519,827.35, 353,987,877.86 and 139,042,635.24
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Solution
The fourth proportional to 256,519,827.35, 353,987,877.86 and 139,042,635.24 is: 191,873,696.05
Step by Step Solution
- Step 1: Write the proportion equation
256,519,827.35 : 353,987,877.86 = 139,042,635.24 : x - Step 2: Convert to fraction form
256,519,827.35/353,987,877.86 = 139,042,635.24/x - Step 3: Cross multiply
256,519,827.35x = 353,987,877.86 × 139,042,635.24 - Step 4: Simplify right side
256,519,827.35x = 49,219,407,382,604,720 - Step 5: Solve for x
x = 49,219,407,382,604,720/256,519,827.35 - Step 6: Final answer
x = 191,873,696.05
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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.