Finding the Fourth Proportional to 291,282.13, 401,915.68 and 163,930.69
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Solution
The fourth proportional to 291,282.13, 401,915.68 and 163,930.69 is: 226,194.15
Step by Step Solution
- Step 1: Write the proportion equation
291,282.13 : 401,915.68 = 163,930.69 : x - Step 2: Convert to fraction form
291,282.13/401,915.68 = 163,930.69/x - Step 3: Cross multiply
291,282.13x = 401,915.68 × 163,930.69 - Step 4: Simplify right side
291,282.13x = 65,886,314,744.22 - Step 5: Solve for x
x = 65,886,314,744.22/291,282.13 - Step 6: Final answer
x = 226,194.15
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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.