Finding the Fourth Proportional to 257,105.76, 385,908.08 and 124,079.68
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Solution
The fourth proportional to 257,105.76, 385,908.08 and 124,079.68 is: 186,239.90
Step by Step Solution
- Step 1: Write the proportion equation
257,105.76 : 385,908.08 = 124,079.68 : x - Step 2: Convert to fraction form
257,105.76/385,908.08 = 124,079.68/x - Step 3: Cross multiply
257,105.76x = 385,908.08 × 124,079.68 - Step 4: Simplify right side
257,105.76x = 47,883,351,075.81 - Step 5: Solve for x
x = 47,883,351,075.81/257,105.76 - Step 6: Final answer
x = 186,239.90
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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.