Finding the Fourth Proportional to 261,486.80, 392,440.40 and 135,164.09
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Solution
The fourth proportional to 261,486.80, 392,440.40 and 135,164.09 is: 202,854.78
Step by Step Solution
- Step 1: Write the proportion equation
261,486.80 : 392,440.40 = 135,164.09 : x - Step 2: Convert to fraction form
261,486.80/392,440.40 = 135,164.09/x - Step 3: Cross multiply
261,486.80x = 392,440.40 × 135,164.09 - Step 4: Simplify right side
261,486.80x = 53,043,846,907.21 - Step 5: Solve for x
x = 53,043,846,907.21/261,486.80 - Step 6: Final answer
x = 202,854.78
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.