Finding the Fourth Proportional to 257,465.40, 386,201.70 and 79,961.19
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Solution
The fourth proportional to 257,465.40, 386,201.70 and 79,961.19 is: 119,942.90
Step by Step Solution
- Step 1: Write the proportion equation
257,465.40 : 386,201.70 = 79,961.19 : x - Step 2: Convert to fraction form
257,465.40/386,201.70 = 79,961.19/x - Step 3: Cross multiply
257,465.40x = 386,201.70 × 79,961.19 - Step 4: Simplify right side
257,465.40x = 30,881,147,512.02 - Step 5: Solve for x
x = 30,881,147,512.02/257,465.40 - Step 6: Final answer
x = 119,942.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.