Finding the Fourth Proportional to 393,043.40, 542,370.05 and 220,933.99
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Solution
The fourth proportional to 393,043.40, 542,370.05 and 220,933.99 is: 304,872.13
Step by Step Solution
- Step 1: Write the proportion equation
393,043.40 : 542,370.05 = 220,933.99 : x - Step 2: Convert to fraction form
393,043.40/542,370.05 = 220,933.99/x - Step 3: Cross multiply
393,043.40x = 542,370.05 × 220,933.99 - Step 4: Simplify right side
393,043.40x = 119,827,979,203.00 - Step 5: Solve for x
x = 119,827,979,203.00/393,043.40 - Step 6: Final answer
x = 304,872.13
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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.