Finding the Fourth Proportional to 289,679.14, 434,638.69 and 156,402.75
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Solution
The fourth proportional to 289,679.14, 434,638.69 and 156,402.75 is: 234,668.90
Step by Step Solution
- Step 1: Write the proportion equation
289,679.14 : 434,638.69 = 156,402.75 : x - Step 2: Convert to fraction form
289,679.14/434,638.69 = 156,402.75/x - Step 3: Cross multiply
289,679.14x = 434,638.69 × 156,402.75 - Step 4: Simplify right side
289,679.14x = 67,978,686,372.40 - Step 5: Solve for x
x = 67,978,686,372.40/289,679.14 - Step 6: Final answer
x = 234,668.90
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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.