Finding the Fourth Proportional to 209,237.09, 288,778.70 and 127,612.68
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Solution
The fourth proportional to 209,237.09, 288,778.70 and 127,612.68 is: 176,124.72
Step by Step Solution
- Step 1: Write the proportion equation
209,237.09 : 288,778.70 = 127,612.68 : x - Step 2: Convert to fraction form
209,237.09/288,778.70 = 127,612.68/x - Step 3: Cross multiply
209,237.09x = 288,778.70 × 127,612.68 - Step 4: Simplify right side
209,237.09x = 36,851,823,195.85 - Step 5: Solve for x
x = 36,851,823,195.85/209,237.09 - Step 6: Final answer
x = 176,124.72
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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.