Finding the Fourth Proportional to 209,209.61, 313,816.64 and 82,880.62
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Solution
The fourth proportional to 209,209.61, 313,816.64 and 82,880.62 is: 124,321.80
Step by Step Solution
- Step 1: Write the proportion equation
209,209.61 : 313,816.64 = 82,880.62 : x - Step 2: Convert to fraction form
209,209.61/313,816.64 = 82,880.62/x - Step 3: Cross multiply
209,209.61x = 313,816.64 × 82,880.62 - Step 4: Simplify right side
209,209.61x = 26,009,316,490.57 - Step 5: Solve for x
x = 26,009,316,490.57/209,209.61 - Step 6: Final answer
x = 124,321.80
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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.