Finding the Fourth Proportional to 380,408.99, 524,957.97 and 210,639.47
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Solution
The fourth proportional to 380,408.99, 524,957.97 and 210,639.47 is: 290,678.90
Step by Step Solution
- Step 1: Write the proportion equation
380,408.99 : 524,957.97 = 210,639.47 : x - Step 2: Convert to fraction form
380,408.99/524,957.97 = 210,639.47/x - Step 3: Cross multiply
380,408.99x = 524,957.97 × 210,639.47 - Step 4: Simplify right side
380,408.99x = 110,576,865,948.29 - Step 5: Solve for x
x = 110,576,865,948.29/380,408.99 - Step 6: Final answer
x = 290,678.90
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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.