Finding the Fourth Proportional to 386,813.84, 533,976.36 and 235,970.96
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Solution
The fourth proportional to 386,813.84, 533,976.36 and 235,970.96 is: 325,745.62
Step by Step Solution
- Step 1: Write the proportion equation
386,813.84 : 533,976.36 = 235,970.96 : x - Step 2: Convert to fraction form
386,813.84/533,976.36 = 235,970.96/x - Step 3: Cross multiply
386,813.84x = 533,976.36 × 235,970.96 - Step 4: Simplify right side
386,813.84x = 126,002,914,286.51 - Step 5: Solve for x
x = 126,002,914,286.51/386,813.84 - Step 6: Final answer
x = 325,745.62
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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.