Finding the Fourth Proportional to 206,698.08, 309,985.50 and 80,357.94
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Solution
The fourth proportional to 206,698.08, 309,985.50 and 80,357.94 is: 120,512.95
Step by Step Solution
- Step 1: Write the proportion equation
206,698.08 : 309,985.50 = 80,357.94 : x - Step 2: Convert to fraction form
206,698.08/309,985.50 = 80,357.94/x - Step 3: Cross multiply
206,698.08x = 309,985.50 × 80,357.94 - Step 4: Simplify right side
206,698.08x = 24,909,796,209.87 - Step 5: Solve for x
x = 24,909,796,209.87/206,698.08 - Step 6: Final answer
x = 120,512.95
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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.