Finding the Fourth Proportional to 211,896.81, 292,468.02 and 121,305.09
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Solution
The fourth proportional to 211,896.81, 292,468.02 and 121,305.09 is: 167,429.89
Step by Step Solution
- Step 1: Write the proportion equation
211,896.81 : 292,468.02 = 121,305.09 : x - Step 2: Convert to fraction form
211,896.81/292,468.02 = 121,305.09/x - Step 3: Cross multiply
211,896.81x = 292,468.02 × 121,305.09 - Step 4: Simplify right side
211,896.81x = 35,477,860,130.08 - Step 5: Solve for x
x = 35,477,860,130.08/211,896.81 - Step 6: Final answer
x = 167,429.89
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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.