Finding the Fourth Proportional to 289,363.88, 399,460.60 and 192,728.55
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Solution
The fourth proportional to 289,363.88, 399,460.60 and 192,728.55 is: 266,057.61
Step by Step Solution
- Step 1: Write the proportion equation
289,363.88 : 399,460.60 = 192,728.55 : x - Step 2: Convert to fraction form
289,363.88/399,460.60 = 192,728.55/x - Step 3: Cross multiply
289,363.88x = 399,460.60 × 192,728.55 - Step 4: Simplify right side
289,363.88x = 76,987,462,220.13 - Step 5: Solve for x
x = 76,987,462,220.13/289,363.88 - Step 6: Final answer
x = 266,057.61
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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.