Finding the Fourth Proportional to 613,400.20, 920,129.10 and 192,689.80
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Solution
The fourth proportional to 613,400.20, 920,129.10 and 192,689.80 is: 289,043.75
Step by Step Solution
- Step 1: Write the proportion equation
613,400.20 : 920,129.10 = 192,689.80 : x - Step 2: Convert to fraction form
613,400.20/920,129.10 = 192,689.80/x - Step 3: Cross multiply
613,400.20x = 920,129.10 × 192,689.80 - Step 4: Simplify right side
613,400.20x = 177,299,492,253.18 - Step 5: Solve for x
x = 177,299,492,253.18/613,400.20 - Step 6: Final answer
x = 289,043.75
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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.