Finding the Fourth Proportional to 211,391.60, 291,714.09 and 115,895.03
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Solution
The fourth proportional to 211,391.60, 291,714.09 and 115,895.03 is: 159,931.68
Step by Step Solution
- Step 1: Write the proportion equation
211,391.60 : 291,714.09 = 115,895.03 : x - Step 2: Convert to fraction form
211,391.60/291,714.09 = 115,895.03/x - Step 3: Cross multiply
211,391.60x = 291,714.09 × 115,895.03 - Step 4: Simplify right side
211,391.60x = 33,808,213,211.97 - Step 5: Solve for x
x = 33,808,213,211.97/211,391.60 - Step 6: Final answer
x = 159,931.68
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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.