Finding the Fourth Proportional to 438,122.20, 655,725.30 and 317,837.20
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Solution
The fourth proportional to 438,122.20, 655,725.30 and 317,837.20 is: 475,698.09
Step by Step Solution
- Step 1: Write the proportion equation
438,122.20 : 655,725.30 = 317,837.20 : x - Step 2: Convert to fraction form
438,122.20/655,725.30 = 317,837.20/x - Step 3: Cross multiply
438,122.20x = 655,725.30 × 317,837.20 - Step 4: Simplify right side
438,122.20x = 208,413,893,321.16 - Step 5: Solve for x
x = 208,413,893,321.16/438,122.20 - Step 6: Final answer
x = 475,698.09
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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.