Finding the Fourth Proportional to 212,078.31, 292,673.67 and 115,288.68
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Solution
The fourth proportional to 212,078.31, 292,673.67 and 115,288.68 is: 159,101.42
Step by Step Solution
- Step 1: Write the proportion equation
212,078.31 : 292,673.67 = 115,288.68 : x - Step 2: Convert to fraction form
212,078.31/292,673.67 = 115,288.68/x - Step 3: Cross multiply
212,078.31x = 292,673.67 × 115,288.68 - Step 4: Simplify right side
212,078.31x = 33,741,961,085.06 - Step 5: Solve for x
x = 33,741,961,085.06/212,078.31 - Step 6: Final answer
x = 159,101.42
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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.