Finding the Fourth Proportional to 205,431.80, 307,629.30 and 163,959.80
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Solution
The fourth proportional to 205,431.80, 307,629.30 and 163,959.80 is: 245,525.95
Step by Step Solution
- Step 1: Write the proportion equation
205,431.80 : 307,629.30 = 163,959.80 : x - Step 2: Convert to fraction form
205,431.80/307,629.30 = 163,959.80/x - Step 3: Cross multiply
205,431.80x = 307,629.30 × 163,959.80 - Step 4: Simplify right side
205,431.80x = 50,438,838,502.14 - Step 5: Solve for x
x = 50,438,838,502.14/205,431.80 - Step 6: Final answer
x = 245,525.95
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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.