Finding the Fourth Proportional to 338,716.65, 508,075.21 and 86,016.09
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Solution
The fourth proportional to 338,716.65, 508,075.21 and 86,016.09 is: 129,024.19
Step by Step Solution
- Step 1: Write the proportion equation
338,716.65 : 508,075.21 = 86,016.09 : x - Step 2: Convert to fraction form
338,716.65/508,075.21 = 86,016.09/x - Step 3: Cross multiply
338,716.65x = 508,075.21 × 86,016.09 - Step 4: Simplify right side
338,716.65x = 43,702,642,990.13 - Step 5: Solve for x
x = 43,702,642,990.13/338,716.65 - Step 6: Final answer
x = 129,024.19
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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.