Finding the Fourth Proportional to 211,365.90, 291,696.12 and 115,876.62
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Solution
The fourth proportional to 211,365.90, 291,696.12 and 115,876.62 is: 159,915.86
Step by Step Solution
- Step 1: Write the proportion equation
211,365.90 : 291,696.12 = 115,876.62 : x - Step 2: Convert to fraction form
211,365.90/291,696.12 = 115,876.62/x - Step 3: Cross multiply
211,365.90x = 291,696.12 × 115,876.62 - Step 4: Simplify right side
211,365.90x = 33,800,760,452.71 - Step 5: Solve for x
x = 33,800,760,452.71/211,365.90 - Step 6: Final answer
x = 159,915.86
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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.