Finding the Fourth Proportional to 201,768.48, 278,429.74 and 115,722.99
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Solution
The fourth proportional to 201,768.48, 278,429.74 and 115,722.99 is: 159,691.55
Step by Step Solution
- Step 1: Write the proportion equation
201,768.48 : 278,429.74 = 115,722.99 : x - Step 2: Convert to fraction form
201,768.48/278,429.74 = 115,722.99/x - Step 3: Cross multiply
201,768.48x = 278,429.74 × 115,722.99 - Step 4: Simplify right side
201,768.48x = 32,220,721,728.42 - Step 5: Solve for x
x = 32,220,721,728.42/201,768.48 - Step 6: Final answer
x = 159,691.55
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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.