Finding the Fourth Proportional to 402,387.36, 555,291.90 and 221,101.26
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Solution
The fourth proportional to 402,387.36, 555,291.90 and 221,101.26 is: 305,118.28
Step by Step Solution
- Step 1: Write the proportion equation
402,387.36 : 555,291.90 = 221,101.26 : x - Step 2: Convert to fraction form
402,387.36/555,291.90 = 221,101.26/x - Step 3: Cross multiply
402,387.36x = 555,291.90 × 221,101.26 - Step 4: Simplify right side
402,387.36x = 122,775,738,757.79 - Step 5: Solve for x
x = 122,775,738,757.79/402,387.36 - Step 6: Final answer
x = 305,118.28
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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.