Finding the Fourth Proportional to 211,131.68, 291,350.88 and 115,619.92
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Solution
The fourth proportional to 211,131.68, 291,350.88 and 115,619.92 is: 159,549.55
Step by Step Solution
- Step 1: Write the proportion equation
211,131.68 : 291,350.88 = 115,619.92 : x - Step 2: Convert to fraction form
211,131.68/291,350.88 = 115,619.92/x - Step 3: Cross multiply
211,131.68x = 291,350.88 × 115,619.92 - Step 4: Simplify right side
211,131.68x = 33,685,965,437.53 - Step 5: Solve for x
x = 33,685,965,437.53/211,131.68 - Step 6: Final answer
x = 159,549.55
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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.