Finding the Fourth Proportional to 209,171.95, 288,661.55 and 113,684.79
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Solution
The fourth proportional to 209,171.95, 288,661.55 and 113,684.79 is: 156,887.32
Step by Step Solution
- Step 1: Write the proportion equation
209,171.95 : 288,661.55 = 113,684.79 : x - Step 2: Convert to fraction form
209,171.95/288,661.55 = 113,684.79/x - Step 3: Cross multiply
209,171.95x = 288,661.55 × 113,684.79 - Step 4: Simplify right side
209,171.95x = 32,816,427,692.82 - Step 5: Solve for x
x = 32,816,427,692.82/209,171.95 - Step 6: Final answer
x = 156,887.32
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1.5x scale
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.