Finding the Fourth Proportional to 438,578.12, 605,242.76 and 257,293.13
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Solution
The fourth proportional to 438,578.12, 605,242.76 and 257,293.13 is: 355,067.43
Step by Step Solution
- Step 1: Write the proportion equation
438,578.12 : 605,242.76 = 257,293.13 : x - Step 2: Convert to fraction form
438,578.12/605,242.76 = 257,293.13/x - Step 3: Cross multiply
438,578.12x = 605,242.76 × 257,293.13 - Step 4: Simplify right side
438,578.12x = 155,724,804,130.24 - Step 5: Solve for x
x = 155,724,804,130.24/438,578.12 - Step 6: Final answer
x = 355,067.43
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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.