Finding the Fourth Proportional to 201,929.16, 278,664.14 and 111,288.44
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Solution
The fourth proportional to 201,929.16, 278,664.14 and 111,288.44 is: 153,579.09
Step by Step Solution
- Step 1: Write the proportion equation
201,929.16 : 278,664.14 = 111,288.44 : x - Step 2: Convert to fraction form
201,929.16/278,664.14 = 111,288.44/x - Step 3: Cross multiply
201,929.16x = 278,664.14 × 111,288.44 - Step 4: Simplify right side
201,929.16x = 31,012,097,424.54 - Step 5: Solve for x
x = 31,012,097,424.54/201,929.16 - Step 6: Final answer
x = 153,579.09
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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.