Finding the Fourth Proportional to 330,780.99, 456,638.17 and 221,845.49
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Solution
The fourth proportional to 330,780.99, 456,638.17 and 221,845.49 is: 306,254.36
Step by Step Solution
- Step 1: Write the proportion equation
330,780.99 : 456,638.17 = 221,845.49 : x - Step 2: Convert to fraction form
330,780.99/456,638.17 = 221,845.49/x - Step 3: Cross multiply
330,780.99x = 456,638.17 × 221,845.49 - Step 4: Simplify right side
330,780.99x = 101,303,117,467.13 - Step 5: Solve for x
x = 101,303,117,467.13/330,780.99 - Step 6: Final answer
x = 306,254.36
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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.