Finding the Fourth Proportional to 403,645.13, 556,988.43 and 248,571.78
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Solution
The fourth proportional to 403,645.13, 556,988.43 and 248,571.78 is: 343,003.28
Step by Step Solution
- Step 1: Write the proportion equation
403,645.13 : 556,988.43 = 248,571.78 : x - Step 2: Convert to fraction form
403,645.13/556,988.43 = 248,571.78/x - Step 3: Cross multiply
403,645.13x = 556,988.43 × 248,571.78 - Step 4: Simplify right side
403,645.13x = 138,451,605,484.51 - Step 5: Solve for x
x = 138,451,605,484.51/403,645.13 - Step 6: Final answer
x = 343,003.28
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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.