Finding the Fourth Proportional to 261,589.28, 392,420.84 and 84,036.78
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Solution
The fourth proportional to 261,589.28, 392,420.84 and 84,036.78 is: 126,067.03
Step by Step Solution
- Step 1: Write the proportion equation
261,589.28 : 392,420.84 = 84,036.78 : x - Step 2: Convert to fraction form
261,589.28/392,420.84 = 84,036.78/x - Step 3: Cross multiply
261,589.28x = 392,420.84 × 84,036.78 - Step 4: Simplify right side
261,589.28x = 32,977,783,378.31 - Step 5: Solve for x
x = 32,977,783,378.31/261,589.28 - Step 6: Final answer
x = 126,067.03
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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.