Finding the Fourth Proportional to 209,975.70, 314,963.55 and 76,811.70
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Solution
The fourth proportional to 209,975.70, 314,963.55 and 76,811.70 is: 115,217.55
Step by Step Solution
- Step 1: Write the proportion equation
209,975.70 : 314,963.55 = 76,811.70 : x - Step 2: Convert to fraction form
209,975.70/314,963.55 = 76,811.70/x - Step 3: Cross multiply
209,975.70x = 314,963.55 × 76,811.70 - Step 4: Simplify right side
209,975.70x = 24,192,885,713.54 - Step 5: Solve for x
x = 24,192,885,713.54/209,975.70 - Step 6: Final answer
x = 115,217.55
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1.5x scale
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.