Finding the Fourth Proportional to 399,122.10, 551,388.29 and 261,627.44
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Solution
The fourth proportional to 399,122.10, 551,388.29 and 261,627.44 is: 361,439.03
Step by Step Solution
- Step 1: Write the proportion equation
399,122.10 : 551,388.29 = 261,627.44 : x - Step 2: Convert to fraction form
399,122.10/551,388.29 = 261,627.44/x - Step 3: Cross multiply
399,122.10x = 551,388.29 × 261,627.44 - Step 4: Simplify right side
399,122.10x = 144,258,302,693.60 - Step 5: Solve for x
x = 144,258,302,693.60/399,122.10 - Step 6: Final answer
x = 361,439.03
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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.