Finding the Fourth Proportional to 257,238.14, 354,790.49 and 155,157.17
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Solution
The fourth proportional to 257,238.14, 354,790.49 and 155,157.17 is: 213,997.38
Step by Step Solution
- Step 1: Write the proportion equation
257,238.14 : 354,790.49 = 155,157.17 : x - Step 2: Convert to fraction form
257,238.14/354,790.49 = 155,157.17/x - Step 3: Cross multiply
257,238.14x = 354,790.49 × 155,157.17 - Step 4: Simplify right side
257,238.14x = 55,048,288,371.31 - Step 5: Solve for x
x = 55,048,288,371.31/257,238.14 - Step 6: Final answer
x = 213,997.38
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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.