Finding the Fourth Proportional to 274,406.40, 411,639.84 and 87,374.88
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Solution
The fourth proportional to 274,406.40, 411,639.84 and 87,374.88 is: 131,071.95
Step by Step Solution
- Step 1: Write the proportion equation
274,406.40 : 411,639.84 = 87,374.88 : x - Step 2: Convert to fraction form
274,406.40/411,639.84 = 87,374.88/x - Step 3: Cross multiply
274,406.40x = 411,639.84 × 87,374.88 - Step 4: Simplify right side
274,406.40x = 35,966,981,623.22 - Step 5: Solve for x
x = 35,966,981,623.22/274,406.40 - Step 6: Final answer
x = 131,071.95
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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.