Finding the Fourth Proportional to 380,908.68, 571,371.12 and 128,196.84
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Solution
The fourth proportional to 380,908.68, 571,371.12 and 128,196.84 is: 192,297.99
Step by Step Solution
- Step 1: Write the proportion equation
380,908.68 : 571,371.12 = 128,196.84 : x - Step 2: Convert to fraction form
380,908.68/571,371.12 = 128,196.84/x - Step 3: Cross multiply
380,908.68x = 571,371.12 × 128,196.84 - Step 4: Simplify right side
380,908.68x = 73,247,972,051.26 - Step 5: Solve for x
x = 73,247,972,051.26/380,908.68 - Step 6: Final answer
x = 192,297.99
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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.