Finding the Fourth Proportional to 289,898.88, 434,797.50 and 76,668.84
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Solution
The fourth proportional to 289,898.88, 434,797.50 and 76,668.84 is: 114,989.82
Step by Step Solution
- Step 1: Write the proportion equation
289,898.88 : 434,797.50 = 76,668.84 : x - Step 2: Convert to fraction form
289,898.88/434,797.50 = 76,668.84/x - Step 3: Cross multiply
289,898.88x = 434,797.50 × 76,668.84 - Step 4: Simplify right side
289,898.88x = 33,335,419,959.90 - Step 5: Solve for x
x = 33,335,419,959.90/289,898.88 - Step 6: Final answer
x = 114,989.82
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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.