Finding the Fourth Proportional to 256,519,795.10, 353,987,833.49 and 139,042,603.07
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Solution
The fourth proportional to 256,519,795.10, 353,987,833.49 and 139,042,603.07 is: 191,873,651.72
Step by Step Solution
- Step 1: Write the proportion equation
256,519,795.10 : 353,987,833.49 = 139,042,603.07 : x - Step 2: Convert to fraction form
256,519,795.10/353,987,833.49 = 139,042,603.07/x - Step 3: Cross multiply
256,519,795.10x = 353,987,833.49 × 139,042,603.07 - Step 4: Simplify right side
256,519,795.10x = 49,219,389,822,136,992 - Step 5: Solve for x
x = 49,219,389,822,136,992/256,519,795.10 - Step 6: Final answer
x = 191,873,651.72
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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.