Finding the Fourth Proportional to 206,455.20, 309,526.93 and 135,395.74
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Solution
The fourth proportional to 206,455.20, 309,526.93 and 135,395.74 is: 202,991.38
Step by Step Solution
- Step 1: Write the proportion equation
206,455.20 : 309,526.93 = 135,395.74 : x - Step 2: Convert to fraction form
206,455.20/309,526.93 = 135,395.74/x - Step 3: Cross multiply
206,455.20x = 309,526.93 × 135,395.74 - Step 4: Simplify right side
206,455.20x = 41,908,625,512.66 - Step 5: Solve for x
x = 41,908,625,512.66/206,455.20 - Step 6: Final answer
x = 202,991.38
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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.