Finding the Fourth Proportional to 420,641.36, 580,551.76 and 267,519.92
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Solution
The fourth proportional to 420,641.36, 580,551.76 and 267,519.92 is: 369,219.90
Step by Step Solution
- Step 1: Write the proportion equation
420,641.36 : 580,551.76 = 267,519.92 : x - Step 2: Convert to fraction form
420,641.36/580,551.76 = 267,519.92/x - Step 3: Cross multiply
420,641.36x = 580,551.76 × 267,519.92 - Step 4: Simplify right side
420,641.36x = 155,309,160,391.06 - Step 5: Solve for x
x = 155,309,160,391.06/420,641.36 - Step 6: Final answer
x = 369,219.90
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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.