Finding the Fourth Proportional to 402,469.68, 555,407.76 and 221,193.24
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Solution
The fourth proportional to 402,469.68, 555,407.76 and 221,193.24 is: 305,246.45
Step by Step Solution
- Step 1: Write the proportion equation
402,469.68 : 555,407.76 = 221,193.24 : x - Step 2: Convert to fraction form
402,469.68/555,407.76 = 221,193.24/x - Step 3: Cross multiply
402,469.68x = 555,407.76 × 221,193.24 - Step 4: Simplify right side
402,469.68x = 122,852,441,955.54 - Step 5: Solve for x
x = 122,852,441,955.54/402,469.68 - Step 6: Final answer
x = 305,246.45
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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.