Finding the Fourth Proportional to 221,618.61, 305,845.14 and 135,550.59
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Solution
The fourth proportional to 221,618.61, 305,845.14 and 135,550.59 is: 187,066.82
Step by Step Solution
- Step 1: Write the proportion equation
221,618.61 : 305,845.14 = 135,550.59 : x - Step 2: Convert to fraction form
221,618.61/305,845.14 = 135,550.59/x - Step 3: Cross multiply
221,618.61x = 305,845.14 × 135,550.59 - Step 4: Simplify right side
221,618.61x = 41,457,489,175.63 - Step 5: Solve for x
x = 41,457,489,175.63/221,618.61 - Step 6: Final answer
x = 187,066.82
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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.