Finding the Fourth Proportional to 209,179.36, 288,669.36 and 113,686.12
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Solution
The fourth proportional to 209,179.36, 288,669.36 and 113,686.12 is: 156,887.85
Step by Step Solution
- Step 1: Write the proportion equation
209,179.36 : 288,669.36 = 113,686.12 : x - Step 2: Convert to fraction form
209,179.36/288,669.36 = 113,686.12/x - Step 3: Cross multiply
209,179.36x = 288,669.36 × 113,686.12 - Step 4: Simplify right side
209,179.36x = 32,817,699,501.28 - Step 5: Solve for x
x = 32,817,699,501.28/209,179.36 - Step 6: Final answer
x = 156,887.85
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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.