Finding the Fourth Proportional to 211,087.80, 291,299.09 and 114,291.18
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Solution
The fourth proportional to 211,087.80, 291,299.09 and 114,291.18 is: 157,720.70
Step by Step Solution
- Step 1: Write the proportion equation
211,087.80 : 291,299.09 = 114,291.18 : x - Step 2: Convert to fraction form
211,087.80/291,299.09 = 114,291.18/x - Step 3: Cross multiply
211,087.80x = 291,299.09 × 114,291.18 - Step 4: Simplify right side
211,087.80x = 33,292,916,157.57 - Step 5: Solve for x
x = 33,292,916,157.57/211,087.80 - Step 6: Final answer
x = 157,720.70
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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.