Finding the Fourth Proportional to 875,163.80, 1,312,745.70 and 210,315.80
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Solution
The fourth proportional to 875,163.80, 1,312,745.70 and 210,315.80 is: 315,473.70
Step by Step Solution
- Step 1: Write the proportion equation
875,163.80 : 1,312,745.70 = 210,315.80 : x - Step 2: Convert to fraction form
875,163.80/1,312,745.70 = 210,315.80/x - Step 3: Cross multiply
875,163.80x = 1,312,745.70 × 210,315.80 - Step 4: Simplify right side
875,163.80x = 276,091,162,092.06 - Step 5: Solve for x
x = 276,091,162,092.06/875,163.80 - Step 6: Final answer
x = 315,473.70
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1.5x scale
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.