Finding the Fourth Proportional to 225,916.16, 338,775.80 and 76,128.53
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Solution
The fourth proportional to 225,916.16, 338,775.80 and 76,128.53 is: 114,159.62
Step by Step Solution
- Step 1: Write the proportion equation
225,916.16 : 338,775.80 = 76,128.53 : x - Step 2: Convert to fraction form
225,916.16/338,775.80 = 76,128.53/x - Step 3: Cross multiply
225,916.16x = 338,775.80 × 76,128.53 - Step 4: Simplify right side
225,916.16x = 25,790,501,579.05 - Step 5: Solve for x
x = 25,790,501,579.05/225,916.16 - Step 6: Final answer
x = 114,159.62
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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.