Finding the Fourth Proportional to 420,563.65, 580,370.35 and 239,271.68
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Solution
The fourth proportional to 420,563.65, 580,370.35 and 239,271.68 is: 330,190.65
Step by Step Solution
- Step 1: Write the proportion equation
420,563.65 : 580,370.35 = 239,271.68 : x - Step 2: Convert to fraction form
420,563.65/580,370.35 = 239,271.68/x - Step 3: Cross multiply
420,563.65x = 580,370.35 × 239,271.68 - Step 4: Simplify right side
420,563.65x = 138,866,185,892.12 - Step 5: Solve for x
x = 138,866,185,892.12/420,563.65 - Step 6: Final answer
x = 330,190.65
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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.