Finding the Fourth Proportional to 211,636.49, 292,071.47 and 139,892.09
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Solution
The fourth proportional to 211,636.49, 292,071.47 and 139,892.09 is: 193,059.75
Step by Step Solution
- Step 1: Write the proportion equation
211,636.49 : 292,071.47 = 139,892.09 : x - Step 2: Convert to fraction form
211,636.49/292,071.47 = 139,892.09/x - Step 3: Cross multiply
211,636.49x = 292,071.47 × 139,892.09 - Step 4: Simplify right side
211,636.49x = 40,858,488,367.67 - Step 5: Solve for x
x = 40,858,488,367.67/211,636.49 - Step 6: Final answer
x = 193,059.75
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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.