Finding the Fourth Proportional to 212,519.81, 293,276.85 and 115,722.15
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Solution
The fourth proportional to 212,519.81, 293,276.85 and 115,722.15 is: 159,696.31
Step by Step Solution
- Step 1: Write the proportion equation
212,519.81 : 293,276.85 = 115,722.15 : x - Step 2: Convert to fraction form
212,519.81/293,276.85 = 115,722.15/x - Step 3: Cross multiply
212,519.81x = 293,276.85 × 115,722.15 - Step 4: Simplify right side
212,519.81x = 33,938,627,627.23 - Step 5: Solve for x
x = 33,938,627,627.23/212,519.81 - Step 6: Final answer
x = 159,696.31
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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.