Finding the Fourth Proportional to 209,305.20, 313,957.80 and 201,140.40
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Solution
The fourth proportional to 209,305.20, 313,957.80 and 201,140.40 is: 301,710.60
Step by Step Solution
- Step 1: Write the proportion equation
209,305.20 : 313,957.80 = 201,140.40 : x - Step 2: Convert to fraction form
209,305.20/313,957.80 = 201,140.40/x - Step 3: Cross multiply
209,305.20x = 313,957.80 × 201,140.40 - Step 4: Simplify right side
209,305.20x = 63,149,597,475.12 - Step 5: Solve for x
x = 63,149,597,475.12/209,305.20 - Step 6: Final answer
x = 301,710.60
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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.