Finding the Fourth Proportional to 259,456.67, 388,954.31 and 139,577.99
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Solution
The fourth proportional to 259,456.67, 388,954.31 and 139,577.99 is: 209,242.87
Step by Step Solution
- Step 1: Write the proportion equation
259,456.67 : 388,954.31 = 139,577.99 : x - Step 2: Convert to fraction form
259,456.67/388,954.31 = 139,577.99/x - Step 3: Cross multiply
259,456.67x = 388,954.31 × 139,577.99 - Step 4: Simplify right side
259,456.67x = 54,289,458,148.98 - Step 5: Solve for x
x = 54,289,458,148.98/259,456.67 - Step 6: Final answer
x = 209,242.87
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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.