Finding the Fourth Proportional to 281,289.42, 421,974.84 and 81,610.68
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Solution
The fourth proportional to 281,289.42, 421,974.84 and 81,610.68 is: 122,427.83
Step by Step Solution
- Step 1: Write the proportion equation
281,289.42 : 421,974.84 = 81,610.68 : x - Step 2: Convert to fraction form
281,289.42/421,974.84 = 81,610.68/x - Step 3: Cross multiply
281,289.42x = 421,974.84 × 81,610.68 - Step 4: Simplify right side
281,289.42x = 34,437,653,635.29 - Step 5: Solve for x
x = 34,437,653,635.29/281,289.42 - Step 6: Final answer
x = 122,427.83
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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.