Finding the Fourth Proportional to 658,257.80, 987,420.84 and 209,013.80
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Solution
The fourth proportional to 658,257.80, 987,420.84 and 209,013.80 is: 313,531.54
Step by Step Solution
- Step 1: Write the proportion equation
658,257.80 : 987,420.84 = 209,013.80 : x - Step 2: Convert to fraction form
658,257.80/987,420.84 = 209,013.80/x - Step 3: Cross multiply
658,257.80x = 987,420.84 × 209,013.80 - Step 4: Simplify right side
658,257.80x = 206,384,581,967.59 - Step 5: Solve for x
x = 206,384,581,967.59/658,257.80 - Step 6: Final answer
x = 313,531.54
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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.