Finding the Fourth Proportional to 216,656.51, 324,808.68 and 90,390.84
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Solution
The fourth proportional to 216,656.51, 324,808.68 and 90,390.84 is: 135,512.79
Step by Step Solution
- Step 1: Write the proportion equation
216,656.51 : 324,808.68 = 90,390.84 : x - Step 2: Convert to fraction form
216,656.51/324,808.68 = 90,390.84/x - Step 3: Cross multiply
216,656.51x = 324,808.68 × 90,390.84 - Step 4: Simplify right side
216,656.51x = 29,359,728,545.42 - Step 5: Solve for x
x = 29,359,728,545.42/216,656.51 - Step 6: Final answer
x = 135,512.79
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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.