Finding the Fourth Proportional to 387,428.08, 580,059.40 and 209,296.92
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Solution
The fourth proportional to 387,428.08, 580,059.40 and 209,296.92 is: 313,360.47
Step by Step Solution
- Step 1: Write the proportion equation
387,428.08 : 580,059.40 = 209,296.92 : x - Step 2: Convert to fraction form
387,428.08/580,059.40 = 209,296.92/x - Step 3: Cross multiply
387,428.08x = 580,059.40 × 209,296.92 - Step 4: Simplify right side
387,428.08x = 121,404,645,837.05 - Step 5: Solve for x
x = 121,404,645,837.05/387,428.08 - Step 6: Final answer
x = 313,360.47
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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.