Finding the Fourth Proportional to 223,879.20, 308,952.81 and 121,903.08
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Solution
The fourth proportional to 223,879.20, 308,952.81 and 121,903.08 is: 168,225.99
Step by Step Solution
- Step 1: Write the proportion equation
223,879.20 : 308,952.81 = 121,903.08 : x - Step 2: Convert to fraction form
223,879.20/308,952.81 = 121,903.08/x - Step 3: Cross multiply
223,879.20x = 308,952.81 × 121,903.08 - Step 4: Simplify right side
223,879.20x = 37,662,299,113.65 - Step 5: Solve for x
x = 37,662,299,113.65/223,879.20 - Step 6: Final answer
x = 168,225.99
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1.5x scale
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.