Finding the Fourth Proportional to 209,860.32, 289,603.36 and 114,367.68
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Solution
The fourth proportional to 209,860.32, 289,603.36 and 114,367.68 is: 157,825.28
Step by Step Solution
- Step 1: Write the proportion equation
209,860.32 : 289,603.36 = 114,367.68 : x - Step 2: Convert to fraction form
209,860.32/289,603.36 = 114,367.68/x - Step 3: Cross multiply
209,860.32x = 289,603.36 × 114,367.68 - Step 4: Simplify right side
209,860.32x = 33,121,264,403.40 - Step 5: Solve for x
x = 33,121,264,403.40/209,860.32 - Step 6: Final answer
x = 157,825.28
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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.