Finding the Fourth Proportional to 287,988.75, 397,435.28 and 160,688.88
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Solution
The fourth proportional to 287,988.75, 397,435.28 and 160,688.88 is: 221,756.68
Step by Step Solution
- Step 1: Write the proportion equation
287,988.75 : 397,435.28 = 160,688.88 : x - Step 2: Convert to fraction form
287,988.75/397,435.28 = 160,688.88/x - Step 3: Cross multiply
287,988.75x = 397,435.28 × 160,688.88 - Step 4: Simplify right side
287,988.75x = 63,863,429,212.24 - Step 5: Solve for x
x = 63,863,429,212.24/287,988.75 - Step 6: Final answer
x = 221,756.68
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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.