Finding the Fourth Proportional to 286,916.12, 395,782.44 and 172,164.26
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Solution
The fourth proportional to 286,916.12, 395,782.44 and 172,164.26 is: 237,489.59
Step by Step Solution
- Step 1: Write the proportion equation
286,916.12 : 395,782.44 = 172,164.26 : x - Step 2: Convert to fraction form
286,916.12/395,782.44 = 172,164.26/x - Step 3: Cross multiply
286,916.12x = 395,782.44 × 172,164.26 - Step 4: Simplify right side
286,916.12x = 68,139,590,903.59 - Step 5: Solve for x
x = 68,139,590,903.59/286,916.12 - Step 6: Final answer
x = 237,489.59
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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.