Finding the Fourth Proportional to 256,519,809.95, 353,987,854.03 and 139,042,617.98
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Solution
The fourth proportional to 256,519,809.95, 353,987,854.03 and 139,042,617.98 is: 191,873,672.32
Step by Step Solution
- Step 1: Write the proportion equation
256,519,809.95 : 353,987,854.03 = 139,042,617.98 : x - Step 2: Convert to fraction form
256,519,809.95/353,987,854.03 = 139,042,617.98/x - Step 3: Cross multiply
256,519,809.95x = 353,987,854.03 × 139,042,617.98 - Step 4: Simplify right side
256,519,809.95x = 49,219,397,957,453,288 - Step 5: Solve for x
x = 49,219,397,957,453,288/256,519,809.95 - Step 6: Final answer
x = 191,873,672.32
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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.