Finding the Fourth Proportional to 210,684.48, 290,745.81 and 115,191.18
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Solution
The fourth proportional to 210,684.48, 290,745.81 and 115,191.18 is: 158,964.50
Step by Step Solution
- Step 1: Write the proportion equation
210,684.48 : 290,745.81 = 115,191.18 : x - Step 2: Convert to fraction form
210,684.48/290,745.81 = 115,191.18/x - Step 3: Cross multiply
210,684.48x = 290,745.81 × 115,191.18 - Step 4: Simplify right side
210,684.48x = 33,491,352,933.96 - Step 5: Solve for x
x = 33,491,352,933.96/210,684.48 - Step 6: Final answer
x = 158,964.50
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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.