Finding the Fourth Proportional to 203,195.76, 280,407.18 and 112,551.42
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Solution
The fourth proportional to 203,195.76, 280,407.18 and 112,551.42 is: 155,319.32
Step by Step Solution
- Step 1: Write the proportion equation
203,195.76 : 280,407.18 = 112,551.42 : x - Step 2: Convert to fraction form
203,195.76/280,407.18 = 112,551.42/x - Step 3: Cross multiply
203,195.76x = 280,407.18 × 112,551.42 - Step 4: Simplify right side
203,195.76x = 31,560,226,988.21 - Step 5: Solve for x
x = 31,560,226,988.21/203,195.76 - Step 6: Final answer
x = 155,319.32
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1.5x scale
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.