Finding the Fourth Proportional to 309,395.75, 426,167.51 and 218,594.09
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Solution
The fourth proportional to 309,395.75, 426,167.51 and 218,594.09 is: 301,095.60
Step by Step Solution
- Step 1: Write the proportion equation
309,395.75 : 426,167.51 = 218,594.09 : x - Step 2: Convert to fraction form
309,395.75/426,167.51 = 218,594.09/x - Step 3: Cross multiply
309,395.75x = 426,167.51 × 218,594.09 - Step 4: Simplify right side
309,395.75x = 93,157,699,036.02 - Step 5: Solve for x
x = 93,157,699,036.02/309,395.75 - Step 6: Final answer
x = 301,095.60
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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.