Finding the Fourth Proportional to 399,548.81, 551,394.12 and 229,783.07
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Solution
The fourth proportional to 399,548.81, 551,394.12 and 229,783.07 is: 317,110.27
Step by Step Solution
- Step 1: Write the proportion equation
399,548.81 : 551,394.12 = 229,783.07 : x - Step 2: Convert to fraction form
399,548.81/551,394.12 = 229,783.07/x - Step 3: Cross multiply
399,548.81x = 551,394.12 × 229,783.07 - Step 4: Simplify right side
399,548.81x = 126,701,032,524.63 - Step 5: Solve for x
x = 126,701,032,524.63/399,548.81 - Step 6: Final answer
x = 317,110.27
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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.