Finding the Fourth Proportional to 402,957.03, 556,058.76 and 221,639.68
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Solution
The fourth proportional to 402,957.03, 556,058.76 and 221,639.68 is: 305,850.69
Step by Step Solution
- Step 1: Write the proportion equation
402,957.03 : 556,058.76 = 221,639.68 : x - Step 2: Convert to fraction form
402,957.03/556,058.76 = 221,639.68/x - Step 3: Cross multiply
402,957.03x = 556,058.76 × 221,639.68 - Step 4: Simplify right side
402,957.03x = 123,244,685,627.60 - Step 5: Solve for x
x = 123,244,685,627.60/402,957.03 - Step 6: Final answer
x = 305,850.69
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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.