Finding the Fourth Proportional to 402,820.09, 555,880.64 and 221,532.03
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Solution
The fourth proportional to 402,820.09, 555,880.64 and 221,532.03 is: 305,708.10
Step by Step Solution
- Step 1: Write the proportion equation
402,820.09 : 555,880.64 = 221,532.03 : x - Step 2: Convert to fraction form
402,820.09/555,880.64 = 221,532.03/x - Step 3: Cross multiply
402,820.09x = 555,880.64 × 221,532.03 - Step 4: Simplify right side
402,820.09x = 123,145,365,509.24 - Step 5: Solve for x
x = 123,145,365,509.24/402,820.09 - Step 6: Final answer
x = 305,708.10
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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.