Finding the Fourth Proportional to 230,855.67, 318,579.57 and 128,875.23
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Solution
The fourth proportional to 230,855.67, 318,579.57 and 128,875.23 is: 177,847.12
Step by Step Solution
- Step 1: Write the proportion equation
230,855.67 : 318,579.57 = 128,875.23 : x - Step 2: Convert to fraction form
230,855.67/318,579.57 = 128,875.23/x - Step 3: Cross multiply
230,855.67x = 318,579.57 × 128,875.23 - Step 4: Simplify right side
230,855.67x = 41,057,015,357.05 - Step 5: Solve for x
x = 41,057,015,357.05/230,855.67 - Step 6: Final answer
x = 177,847.12
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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.