Finding the Fourth Proportional to 431,365.70, 647,048.55 and 221,413.70
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Solution
The fourth proportional to 431,365.70, 647,048.55 and 221,413.70 is: 332,120.55
Step by Step Solution
- Step 1: Write the proportion equation
431,365.70 : 647,048.55 = 221,413.70 : x - Step 2: Convert to fraction form
431,365.70/647,048.55 = 221,413.70/x - Step 3: Cross multiply
431,365.70x = 647,048.55 × 221,413.70 - Step 4: Simplify right side
431,365.70x = 143,265,413,535.14 - Step 5: Solve for x
x = 143,265,413,535.14/431,365.70 - Step 6: Final answer
x = 332,120.55
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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.