Finding the Fourth Proportional to 485,163.40, 728,177.10 and 285,233.80
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Solution
The fourth proportional to 485,163.40, 728,177.10 and 285,233.80 is: 428,104.68
Step by Step Solution
- Step 1: Write the proportion equation
485,163.40 : 728,177.10 = 285,233.80 : x - Step 2: Convert to fraction form
485,163.40/728,177.10 = 285,233.80/x - Step 3: Cross multiply
485,163.40x = 728,177.10 × 285,233.80 - Step 4: Simplify right side
485,163.40x = 207,700,721,305.98 - Step 5: Solve for x
x = 207,700,721,305.98/485,163.40 - Step 6: Final answer
x = 428,104.68
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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.