Finding the Fourth Proportional to 209,312.20, 313,966.86 and 69,082.12
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Solution
The fourth proportional to 209,312.20, 313,966.86 and 69,082.12 is: 103,622.70
Step by Step Solution
- Step 1: Write the proportion equation
209,312.20 : 313,966.86 = 69,082.12 : x - Step 2: Convert to fraction form
209,312.20/313,966.86 = 69,082.12/x - Step 3: Cross multiply
209,312.20x = 313,966.86 × 69,082.12 - Step 4: Simplify right side
209,312.20x = 21,689,496,298.54 - Step 5: Solve for x
x = 21,689,496,298.54/209,312.20 - Step 6: Final answer
x = 103,622.70
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1.5x scale
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.