Finding the Fourth Proportional to 286,671.36, 395,611.20 and 157,615.28
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Solution
The fourth proportional to 286,671.36, 395,611.20 and 157,615.28 is: 217,511.68
Step by Step Solution
- Step 1: Write the proportion equation
286,671.36 : 395,611.20 = 157,615.28 : x - Step 2: Convert to fraction form
286,671.36/395,611.20 = 157,615.28/x - Step 3: Cross multiply
286,671.36x = 395,611.20 × 157,615.28 - Step 4: Simplify right side
286,671.36x = 62,354,370,059.14 - Step 5: Solve for x
x = 62,354,370,059.14/286,671.36 - Step 6: Final answer
x = 217,511.68
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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.