Finding the Fourth Proportional to 211,252.75, 291,528.80 and 121,828.75
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Solution
The fourth proportional to 211,252.75, 291,528.80 and 121,828.75 is: 168,123.68
Step by Step Solution
- Step 1: Write the proportion equation
211,252.75 : 291,528.80 = 121,828.75 : x - Step 2: Convert to fraction form
211,252.75/291,528.80 = 121,828.75/x - Step 3: Cross multiply
211,252.75x = 291,528.80 × 121,828.75 - Step 4: Simplify right side
211,252.75x = 35,516,589,293 - Step 5: Solve for x
x = 35,516,589,293/211,252.75 - Step 6: Final answer
x = 168,123.68
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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.