Finding the Fourth Proportional to 209,438.40, 289,027.68 and 113,947.68
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Solution
The fourth proportional to 209,438.40, 289,027.68 and 113,947.68 is: 157,249.26
Step by Step Solution
- Step 1: Write the proportion equation
209,438.40 : 289,027.68 = 113,947.68 : x - Step 2: Convert to fraction form
209,438.40/289,027.68 = 113,947.68/x - Step 3: Cross multiply
209,438.40x = 289,027.68 × 113,947.68 - Step 4: Simplify right side
209,438.40x = 32,934,033,591.78 - Step 5: Solve for x
x = 32,934,033,591.78/209,438.40 - Step 6: Final answer
x = 157,249.26
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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.