Finding the Fourth Proportional to 270,478.80, 405,718.20 and 207,493.20
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Solution
The fourth proportional to 270,478.80, 405,718.20 and 207,493.20 is: 311,239.80
Step by Step Solution
- Step 1: Write the proportion equation
270,478.80 : 405,718.20 = 207,493.20 : x - Step 2: Convert to fraction form
270,478.80/405,718.20 = 207,493.20/x - Step 3: Cross multiply
270,478.80x = 405,718.20 × 207,493.20 - Step 4: Simplify right side
270,478.80x = 84,183,767,616.24 - Step 5: Solve for x
x = 84,183,767,616.24/270,478.80 - Step 6: Final answer
x = 311,239.80
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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.