Finding the Fourth Proportional to 210,821.68, 315,725.74 and 120,590.92
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Solution
The fourth proportional to 210,821.68, 315,725.74 and 120,590.92 is: 180,596.50
Step by Step Solution
- Step 1: Write the proportion equation
210,821.68 : 315,725.74 = 120,590.92 : x - Step 2: Convert to fraction form
210,821.68/315,725.74 = 120,590.92/x - Step 3: Cross multiply
210,821.68x = 315,725.74 × 120,590.92 - Step 4: Simplify right side
210,821.68x = 38,073,657,454.28 - Step 5: Solve for x
x = 38,073,657,454.28/210,821.68 - Step 6: Final answer
x = 180,596.50
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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.