Finding the Fourth Proportional to 309,562.97, 427,039.70 and 202,195.85
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Solution
The fourth proportional to 309,562.97, 427,039.70 and 202,195.85 is: 278,927.59
Step by Step Solution
- Step 1: Write the proportion equation
309,562.97 : 427,039.70 = 202,195.85 : x - Step 2: Convert to fraction form
309,562.97/427,039.70 = 202,195.85/x - Step 3: Cross multiply
309,562.97x = 427,039.70 × 202,195.85 - Step 4: Simplify right side
309,562.97x = 86,345,651,979.07 - Step 5: Solve for x
x = 86,345,651,979.07/309,562.97 - Step 6: Final answer
x = 278,927.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.