Finding the Fourth Proportional to 203,424.76, 280,742.70 and 112,809.08
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Solution
The fourth proportional to 203,424.76, 280,742.70 and 112,809.08 is: 155,685.70
Step by Step Solution
- Step 1: Write the proportion equation
203,424.76 : 280,742.70 = 112,809.08 : x - Step 2: Convert to fraction form
203,424.76/280,742.70 = 112,809.08/x - Step 3: Cross multiply
203,424.76x = 280,742.70 × 112,809.08 - Step 4: Simplify right side
203,424.76x = 31,670,325,703.72 - Step 5: Solve for x
x = 31,670,325,703.72/203,424.76 - Step 6: Final answer
x = 155,685.70
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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.