Finding the Fourth Proportional to 211,146.29, 291,410.87 and 129,460.09
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Solution
The fourth proportional to 211,146.29, 291,410.87 and 129,460.09 is: 178,672.70
Step by Step Solution
- Step 1: Write the proportion equation
211,146.29 : 291,410.87 = 129,460.09 : x - Step 2: Convert to fraction form
211,146.29/291,410.87 = 129,460.09/x - Step 3: Cross multiply
211,146.29x = 291,410.87 × 129,460.09 - Step 4: Simplify right side
211,146.29x = 37,726,076,627.75 - Step 5: Solve for x
x = 37,726,076,627.75/211,146.29 - Step 6: Final answer
x = 178,672.70
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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.