Finding the Fourth Proportional to 216,565.47, 324,903.57 and 90,163.70
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Solution
The fourth proportional to 216,565.47, 324,903.57 and 90,163.70 is: 135,268.60
Step by Step Solution
- Step 1: Write the proportion equation
216,565.47 : 324,903.57 = 90,163.70 : x - Step 2: Convert to fraction form
216,565.47/324,903.57 = 90,163.70/x - Step 3: Cross multiply
216,565.47x = 324,903.57 × 90,163.70 - Step 4: Simplify right side
216,565.47x = 29,294,508,014.41 - Step 5: Solve for x
x = 29,294,508,014.41/216,565.47 - Step 6: Final answer
x = 135,268.60
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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.