Finding the Fourth Proportional to 402,676.74, 555,695.01 and 221,407.20
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Solution
The fourth proportional to 402,676.74, 555,695.01 and 221,407.20 is: 305,542.55
Step by Step Solution
- Step 1: Write the proportion equation
402,676.74 : 555,695.01 = 221,407.20 : x - Step 2: Convert to fraction form
402,676.74/555,695.01 = 221,407.20/x - Step 3: Cross multiply
402,676.74x = 555,695.01 × 221,407.20 - Step 4: Simplify right side
402,676.74x = 123,034,876,218.07 - Step 5: Solve for x
x = 123,034,876,218.07/402,676.74 - Step 6: Final answer
x = 305,542.55
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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.