Finding the Fourth Proportional to 290,802.16, 401,305.08 and 163,478.80
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Solution
The fourth proportional to 290,802.16, 401,305.08 and 163,478.80 is: 225,599.68
Step by Step Solution
- Step 1: Write the proportion equation
290,802.16 : 401,305.08 = 163,478.80 : x - Step 2: Convert to fraction form
290,802.16/401,305.08 = 163,478.80/x - Step 3: Cross multiply
290,802.16x = 401,305.08 × 163,478.80 - Step 4: Simplify right side
290,802.16x = 65,604,872,912.30 - Step 5: Solve for x
x = 65,604,872,912.30/290,802.16 - Step 6: Final answer
x = 225,599.68
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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.