Finding the Fourth Proportional to 261,177.36, 391,213.08 and 216,698.64
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Solution
The fourth proportional to 261,177.36, 391,213.08 and 216,698.64 is: 324,589.17
Step by Step Solution
- Step 1: Write the proportion equation
261,177.36 : 391,213.08 = 216,698.64 : x - Step 2: Convert to fraction form
261,177.36/391,213.08 = 216,698.64/x - Step 3: Cross multiply
261,177.36x = 391,213.08 × 216,698.64 - Step 4: Simplify right side
261,177.36x = 84,775,342,386.21 - Step 5: Solve for x
x = 84,775,342,386.21/261,177.36 - Step 6: Final answer
x = 324,589.17
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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.