Finding the Fourth Proportional to 207,647.80, 311,471.70 and 155,159.80
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Solution
The fourth proportional to 207,647.80, 311,471.70 and 155,159.80 is: 232,739.70
Step by Step Solution
- Step 1: Write the proportion equation
207,647.80 : 311,471.70 = 155,159.80 : x - Step 2: Convert to fraction form
207,647.80/311,471.70 = 155,159.80/x - Step 3: Cross multiply
207,647.80x = 311,471.70 × 155,159.80 - Step 4: Simplify right side
207,647.80x = 48,327,886,677.66 - Step 5: Solve for x
x = 48,327,886,677.66/207,647.80 - Step 6: Final answer
x = 232,739.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.