Finding the Fourth Proportional to 209,346.90, 288,900.84 and 113,855.70
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Solution
The fourth proportional to 209,346.90, 288,900.84 and 113,855.70 is: 157,122.02
Step by Step Solution
- Step 1: Write the proportion equation
209,346.90 : 288,900.84 = 113,855.70 : x - Step 2: Convert to fraction form
209,346.90/288,900.84 = 113,855.70/x - Step 3: Cross multiply
209,346.90x = 288,900.84 × 113,855.70 - Step 4: Simplify right side
209,346.90x = 32,893,007,368.79 - Step 5: Solve for x
x = 32,893,007,368.79/209,346.90 - Step 6: Final answer
x = 157,122.02
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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.