Finding the Fourth Proportional to 280,869.87, 421,288.34 and 81,185.84
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Solution
The fourth proportional to 280,869.87, 421,288.34 and 81,185.84 is: 121,773.99
Step by Step Solution
- Step 1: Write the proportion equation
280,869.87 : 421,288.34 = 81,185.84 : x - Step 2: Convert to fraction form
280,869.87/421,288.34 = 81,185.84/x - Step 3: Cross multiply
280,869.87x = 421,288.34 × 81,185.84 - Step 4: Simplify right side
280,869.87x = 34,202,645,252.73 - Step 5: Solve for x
x = 34,202,645,252.73/280,869.87 - Step 6: Final answer
x = 121,773.99
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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.