Finding the Fourth Proportional to 256,519,801.26, 353,987,841.99 and 139,042,609.20
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Solution
The fourth proportional to 256,519,801.26, 353,987,841.99 and 139,042,609.20 is: 191,873,660.18
Step by Step Solution
- Step 1: Write the proportion equation
256,519,801.26 : 353,987,841.99 = 139,042,609.20 : x - Step 2: Convert to fraction form
256,519,801.26/353,987,841.99 = 139,042,609.20/x - Step 3: Cross multiply
256,519,801.26x = 353,987,841.99 × 139,042,609.20 - Step 4: Simplify right side
256,519,801.26x = 49,219,393,175,366,920 - Step 5: Solve for x
x = 49,219,393,175,366,920/256,519,801.26 - Step 6: Final answer
x = 191,873,660.18
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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.