Finding the Fourth Proportional to 379,711.75, 524,432.73 and 258,643.09
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Solution
The fourth proportional to 379,711.75, 524,432.73 and 258,643.09 is: 357,220.71
Step by Step Solution
- Step 1: Write the proportion equation
379,711.75 : 524,432.73 = 258,643.09 : x - Step 2: Convert to fraction form
379,711.75/524,432.73 = 258,643.09/x - Step 3: Cross multiply
379,711.75x = 524,432.73 × 258,643.09 - Step 4: Simplify right side
379,711.75x = 135,640,901,784.34 - Step 5: Solve for x
x = 135,640,901,784.34/379,711.75 - Step 6: Final answer
x = 357,220.71
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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.