Finding the Fourth Proportional to 402,678.24, 555,697.08 and 221,408.70
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Solution
The fourth proportional to 402,678.24, 555,697.08 and 221,408.70 is: 305,544.62
Step by Step Solution
- Step 1: Write the proportion equation
402,678.24 : 555,697.08 = 221,408.70 : x - Step 2: Convert to fraction form
402,678.24/555,697.08 = 221,408.70/x - Step 3: Cross multiply
402,678.24x = 555,697.08 × 221,408.70 - Step 4: Simplify right side
402,678.24x = 123,036,168,076.60 - Step 5: Solve for x
x = 123,036,168,076.60/402,678.24 - Step 6: Final answer
x = 305,544.62
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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.