Finding the Fourth Proportional to 399,917.18, 551,886.21 and 230,151.44
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Solution
The fourth proportional to 399,917.18, 551,886.21 and 230,151.44 is: 317,609.28
Step by Step Solution
- Step 1: Write the proportion equation
399,917.18 : 551,886.21 = 230,151.44 : x - Step 2: Convert to fraction form
399,917.18/551,886.21 = 230,151.44/x - Step 3: Cross multiply
399,917.18x = 551,886.21 × 230,151.44 - Step 4: Simplify right side
399,917.18x = 127,017,407,327.36 - Step 5: Solve for x
x = 127,017,407,327.36/399,917.18 - Step 6: Final answer
x = 317,609.28
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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.