Finding the Fourth Proportional to 338,955.93, 508,436.91 and 86,236.74
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Solution
The fourth proportional to 338,955.93, 508,436.91 and 86,236.74 is: 129,355.88
Step by Step Solution
- Step 1: Write the proportion equation
338,955.93 : 508,436.91 = 86,236.74 : x - Step 2: Convert to fraction form
338,955.93/508,436.91 = 86,236.74/x - Step 3: Cross multiply
338,955.93x = 508,436.91 × 86,236.74 - Step 4: Simplify right side
338,955.93x = 43,845,941,614.07 - Step 5: Solve for x
x = 43,845,941,614.07/338,955.93 - Step 6: Final answer
x = 129,355.88
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1.5x scale
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.