Finding the Fourth Proportional to 402,720.26, 555,756.09 and 221,443.90
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Solution
The fourth proportional to 402,720.26, 555,756.09 and 221,443.90 is: 305,593.75
Step by Step Solution
- Step 1: Write the proportion equation
402,720.26 : 555,756.09 = 221,443.90 : x - Step 2: Convert to fraction form
402,720.26/555,756.09 = 221,443.90/x - Step 3: Cross multiply
402,720.26x = 555,756.09 × 221,443.90 - Step 4: Simplify right side
402,720.26x = 123,068,796,018.35 - Step 5: Solve for x
x = 123,068,796,018.35/402,720.26 - Step 6: Final answer
x = 305,593.75
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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.