Finding the Fourth Proportional to 209,316.78, 288,755.64 and 124,373.70
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Solution
The fourth proportional to 209,316.78, 288,755.64 and 124,373.70 is: 171,575.39
Step by Step Solution
- Step 1: Write the proportion equation
209,316.78 : 288,755.64 = 124,373.70 : x - Step 2: Convert to fraction form
209,316.78/288,755.64 = 124,373.70/x - Step 3: Cross multiply
209,316.78x = 288,755.64 × 124,373.70 - Step 4: Simplify right side
209,316.78x = 35,913,607,342.67 - Step 5: Solve for x
x = 35,913,607,342.67/209,316.78 - Step 6: Final answer
x = 171,575.39
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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.