Finding the Fourth Proportional to 208,312.97, 312,485.65 and 68,085.77
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Solution
The fourth proportional to 208,312.97, 312,485.65 and 68,085.77 is: 102,133.95
Step by Step Solution
- Step 1: Write the proportion equation
208,312.97 : 312,485.65 = 68,085.77 : x - Step 2: Convert to fraction form
208,312.97/312,485.65 = 68,085.77/x - Step 3: Cross multiply
208,312.97x = 312,485.65 × 68,085.77 - Step 4: Simplify right side
208,312.97x = 21,275,826,094.20 - Step 5: Solve for x
x = 21,275,826,094.20/208,312.97 - Step 6: Final answer
x = 102,133.95
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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.