Finding the Fourth Proportional to 286,883.20, 430,324.80 and 172,721.80
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Solution
The fourth proportional to 286,883.20, 430,324.80 and 172,721.80 is: 259,082.70
Step by Step Solution
- Step 1: Write the proportion equation
286,883.20 : 430,324.80 = 172,721.80 : x - Step 2: Convert to fraction form
286,883.20/430,324.80 = 172,721.80/x - Step 3: Cross multiply
286,883.20x = 430,324.80 × 172,721.80 - Step 4: Simplify right side
286,883.20x = 74,326,474,040.64 - Step 5: Solve for x
x = 74,326,474,040.64/286,883.20 - Step 6: Final answer
x = 259,082.70
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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.