Finding the Fourth Proportional to 209,407.12, 288,981.60 and 113,913.58
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Solution
The fourth proportional to 209,407.12, 288,981.60 and 113,913.58 is: 157,200.62
Step by Step Solution
- Step 1: Write the proportion equation
209,407.12 : 288,981.60 = 113,913.58 : x - Step 2: Convert to fraction form
209,407.12/288,981.60 = 113,913.58/x - Step 3: Cross multiply
209,407.12x = 288,981.60 × 113,913.58 - Step 4: Simplify right side
209,407.12x = 32,918,928,610.13 - Step 5: Solve for x
x = 32,918,928,610.13/209,407.12 - Step 6: Final answer
x = 157,200.62
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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.