Finding the Fourth Proportional to 211,365.40, 291,695.43 and 115,876.12
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Solution
The fourth proportional to 211,365.40, 291,695.43 and 115,876.12 is: 159,915.17
Step by Step Solution
- Step 1: Write the proportion equation
211,365.40 : 291,695.43 = 115,876.12 : x - Step 2: Convert to fraction form
211,365.40/291,695.43 = 115,876.12/x - Step 3: Cross multiply
211,365.40x = 291,695.43 × 115,876.12 - Step 4: Simplify right side
211,365.40x = 33,800,534,650.13 - Step 5: Solve for x
x = 33,800,534,650.13/211,365.40 - Step 6: Final answer
x = 159,915.17
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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.