Finding the Fourth Proportional to 209,329.14, 288,938.98 and 155,686.80
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Solution
The fourth proportional to 209,329.14, 288,938.98 and 155,686.80 is: 214,895.95
Step by Step Solution
- Step 1: Write the proportion equation
209,329.14 : 288,938.98 = 155,686.80 : x - Step 2: Convert to fraction form
209,329.14/288,938.98 = 155,686.80/x - Step 3: Cross multiply
209,329.14x = 288,938.98 × 155,686.80 - Step 4: Simplify right side
209,329.14x = 44,983,985,191.46 - Step 5: Solve for x
x = 44,983,985,191.46/209,329.14 - Step 6: Final answer
x = 214,895.95
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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.