Finding the Fourth Proportional to 328,111.48, 492,208.26 and 128,406.07
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Solution
The fourth proportional to 328,111.48, 492,208.26 and 128,406.07 is: 192,625.17
Step by Step Solution
- Step 1: Write the proportion equation
328,111.48 : 492,208.26 = 128,406.07 : x - Step 2: Convert to fraction form
328,111.48/492,208.26 = 128,406.07/x - Step 3: Cross multiply
328,111.48x = 492,208.26 × 128,406.07 - Step 4: Simplify right side
328,111.48x = 63,202,528,288.14 - Step 5: Solve for x
x = 63,202,528,288.14/328,111.48 - Step 6: Final answer
x = 192,625.17
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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.