Finding the Fourth Proportional to 211,409.79, 291,745.44 and 115,914.48
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Solution
The fourth proportional to 211,409.79, 291,745.44 and 115,914.48 is: 159,961.94
Step by Step Solution
- Step 1: Write the proportion equation
211,409.79 : 291,745.44 = 115,914.48 : x - Step 2: Convert to fraction form
211,409.79/291,745.44 = 115,914.48/x - Step 3: Cross multiply
211,409.79x = 291,745.44 × 115,914.48 - Step 4: Simplify right side
211,409.79x = 33,817,520,969.97 - Step 5: Solve for x
x = 33,817,520,969.97/211,409.79 - Step 6: Final answer
x = 159,961.94
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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.