Finding the Fourth Proportional to 257,861.16, 355,843.08 and 143,133.12
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Solution
The fourth proportional to 257,861.16, 355,843.08 and 143,133.12 is: 197,520.75
Step by Step Solution
- Step 1: Write the proportion equation
257,861.16 : 355,843.08 = 143,133.12 : x - Step 2: Convert to fraction form
257,861.16/355,843.08 = 143,133.12/x - Step 3: Cross multiply
257,861.16x = 355,843.08 × 143,133.12 - Step 4: Simplify right side
257,861.16x = 50,932,930,270.81 - Step 5: Solve for x
x = 50,932,930,270.81/257,861.16 - Step 6: Final answer
x = 197,520.75
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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.