Finding the Fourth Proportional to 211,911.30, 292,268.47 and 139,388.68
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Solution
The fourth proportional to 211,911.30, 292,268.47 and 139,388.68 is: 192,245.12
Step by Step Solution
- Step 1: Write the proportion equation
211,911.30 : 292,268.47 = 139,388.68 : x - Step 2: Convert to fraction form
211,911.30/292,268.47 = 139,388.68/x - Step 3: Cross multiply
211,911.30x = 292,268.47 × 139,388.68 - Step 4: Simplify right side
211,911.30x = 40,738,914,828.87 - Step 5: Solve for x
x = 40,738,914,828.87/211,911.30 - Step 6: Final answer
x = 192,245.12
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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.