Finding the Fourth Proportional to 222,305.75, 306,781.95 and 121,703.75
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Solution
The fourth proportional to 222,305.75, 306,781.95 and 121,703.75 is: 167,951.18
Step by Step Solution
- Step 1: Write the proportion equation
222,305.75 : 306,781.95 = 121,703.75 : x - Step 2: Convert to fraction form
222,305.75/306,781.95 = 121,703.75/x - Step 3: Cross multiply
222,305.75x = 306,781.95 × 121,703.75 - Step 4: Simplify right side
222,305.75x = 37,336,513,747.31 - Step 5: Solve for x
x = 37,336,513,747.31/222,305.75 - Step 6: Final answer
x = 167,951.18
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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.