Finding the Fourth Proportional to 289,509.84, 434,264.94 and 79,131.96
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Solution
The fourth proportional to 289,509.84, 434,264.94 and 79,131.96 is: 118,697.99
Step by Step Solution
- Step 1: Write the proportion equation
289,509.84 : 434,264.94 = 79,131.96 : x - Step 2: Convert to fraction form
289,509.84/434,264.94 = 79,131.96/x - Step 3: Cross multiply
289,509.84x = 434,264.94 × 79,131.96 - Step 4: Simplify right side
289,509.84x = 34,364,235,861.48 - Step 5: Solve for x
x = 34,364,235,861.48/289,509.84 - Step 6: Final answer
x = 118,697.99
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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.