Finding the Fourth Proportional to 212,320.80, 318,390.48 and 72,015.84
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Solution
The fourth proportional to 212,320.80, 318,390.48 and 72,015.84 is: 107,992.99
Step by Step Solution
- Step 1: Write the proportion equation
212,320.80 : 318,390.48 = 72,015.84 : x - Step 2: Convert to fraction form
212,320.80/318,390.48 = 72,015.84/x - Step 3: Cross multiply
212,320.80x = 318,390.48 × 72,015.84 - Step 4: Simplify right side
212,320.80x = 22,929,157,865.20 - Step 5: Solve for x
x = 22,929,157,865.20/212,320.80 - Step 6: Final answer
x = 107,992.99
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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.