Finding the Fourth Proportional to 223,890.20, 308,967.99 and 121,914.08
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Solution
The fourth proportional to 223,890.20, 308,967.99 and 121,914.08 is: 168,241.17
Step by Step Solution
- Step 1: Write the proportion equation
223,890.20 : 308,967.99 = 121,914.08 : x - Step 2: Convert to fraction form
223,890.20/308,967.99 = 121,914.08/x - Step 3: Cross multiply
223,890.20x = 308,967.99 × 121,914.08 - Step 4: Simplify right side
223,890.20x = 37,667,548,250.30 - Step 5: Solve for x
x = 37,667,548,250.30/223,890.20 - Step 6: Final answer
x = 168,241.17
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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.