Finding the Fourth Proportional to 377,671.20, 521,201.12 and 207,921.12
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Solution
The fourth proportional to 377,671.20, 521,201.12 and 207,921.12 is: 286,939.33
Step by Step Solution
- Step 1: Write the proportion equation
377,671.20 : 521,201.12 = 207,921.12 : x - Step 2: Convert to fraction form
377,671.20/521,201.12 = 207,921.12/x - Step 3: Cross multiply
377,671.20x = 521,201.12 × 207,921.12 - Step 4: Simplify right side
377,671.20x = 108,368,720,615.65 - Step 5: Solve for x
x = 108,368,720,615.65/377,671.20 - Step 6: Final answer
x = 286,939.33
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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.