Finding the Fourth Proportional to 257,206.44, 354,944.84 and 142,492.55
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Solution
The fourth proportional to 257,206.44, 354,944.84 and 142,492.55 is: 196,639.68
Step by Step Solution
- Step 1: Write the proportion equation
257,206.44 : 354,944.84 = 142,492.55 : x - Step 2: Convert to fraction form
257,206.44/354,944.84 = 142,492.55/x - Step 3: Cross multiply
257,206.44x = 354,944.84 × 142,492.55 - Step 4: Simplify right side
257,206.44x = 50,576,992,873.76 - Step 5: Solve for x
x = 50,576,992,873.76/257,206.44 - Step 6: Final answer
x = 196,639.68
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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.