Finding the Fourth Proportional to 252,381.63, 378,490.55 and 83,856.70
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Solution
The fourth proportional to 252,381.63, 378,490.55 and 83,856.70 is: 125,757.84
Step by Step Solution
- Step 1: Write the proportion equation
252,381.63 : 378,490.55 = 83,856.70 : x - Step 2: Convert to fraction form
252,381.63/378,490.55 = 83,856.70/x - Step 3: Cross multiply
252,381.63x = 378,490.55 × 83,856.70 - Step 4: Simplify right side
252,381.63x = 31,738,968,504.19 - Step 5: Solve for x
x = 31,738,968,504.19/252,381.63 - Step 6: Final answer
x = 125,757.84
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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.