Finding the Fourth Proportional to 220,085.06, 303,720.54 and 128,201.99
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Solution
The fourth proportional to 220,085.06, 303,720.54 and 128,201.99 is: 176,920.58
Step by Step Solution
- Step 1: Write the proportion equation
220,085.06 : 303,720.54 = 128,201.99 : x - Step 2: Convert to fraction form
220,085.06/303,720.54 = 128,201.99/x - Step 3: Cross multiply
220,085.06x = 303,720.54 × 128,201.99 - Step 4: Simplify right side
220,085.06x = 38,937,576,113.27 - Step 5: Solve for x
x = 38,937,576,113.27/220,085.06 - Step 6: Final answer
x = 176,920.58
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1.5x scale
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.