Finding the Fourth Proportional to 251,257,681.26, 376,886,609.37 and 78,747,879.42
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Solution
The fourth proportional to 251,257,681.26, 376,886,609.37 and 78,747,879.42 is: 118,121,846.55
Step by Step Solution
- Step 1: Write the proportion equation
251,257,681.26 : 376,886,609.37 = 78,747,879.42 : x - Step 2: Convert to fraction form
251,257,681.26/376,886,609.37 = 78,747,879.42/x - Step 3: Cross multiply
251,257,681.26x = 376,886,609.37 × 78,747,879.42 - Step 4: Simplify right side
251,257,681.26x = 29,679,021,269,681,404 - Step 5: Solve for x
x = 29,679,021,269,681,404/251,257,681.26 - Step 6: Final answer
x = 118,121,846.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.