Finding the Fourth Proportional to 428,342.69, 642,347.93 and 228,554.08
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Solution
The fourth proportional to 428,342.69, 642,347.93 and 228,554.08 is: 342,742.49
Step by Step Solution
- Step 1: Write the proportion equation
428,342.69 : 642,347.93 = 228,554.08 : x - Step 2: Convert to fraction form
428,342.69/642,347.93 = 228,554.08/x - Step 3: Cross multiply
428,342.69x = 642,347.93 × 228,554.08 - Step 4: Simplify right side
428,342.69x = 146,811,239,146.57 - Step 5: Solve for x
x = 146,811,239,146.57/428,342.69 - Step 6: Final answer
x = 342,742.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.