Finding the Fourth Proportional to 399,229.74, 598,938.99 and 129,357.43
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Solution
The fourth proportional to 399,229.74, 598,938.99 and 129,357.43 is: 194,066.73
Step by Step Solution
- Step 1: Write the proportion equation
399,229.74 : 598,938.99 = 129,357.43 : x - Step 2: Convert to fraction form
399,229.74/598,938.99 = 129,357.43/x - Step 3: Cross multiply
399,229.74x = 598,938.99 × 129,357.43 - Step 4: Simplify right side
399,229.74x = 77,477,208,473.20 - Step 5: Solve for x
x = 77,477,208,473.20/399,229.74 - Step 6: Final answer
x = 194,066.73
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.