Finding the Fourth Proportional to 312,082.76, 430,599.30 and 189,572.70
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Solution
The fourth proportional to 312,082.76, 430,599.30 and 189,572.70 is: 261,564.82
Step by Step Solution
- Step 1: Write the proportion equation
312,082.76 : 430,599.30 = 189,572.70 : x - Step 2: Convert to fraction form
312,082.76/430,599.30 = 189,572.70/x - Step 3: Cross multiply
312,082.76x = 430,599.30 × 189,572.70 - Step 4: Simplify right side
312,082.76x = 81,629,871,919.11 - Step 5: Solve for x
x = 81,629,871,919.11/312,082.76 - Step 6: Final answer
x = 261,564.82
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.