Finding the Fourth Proportional to 420,753.08, 580,689.09 and 236,997.70
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Solution
The fourth proportional to 420,753.08, 580,689.09 and 236,997.70 is: 327,084.89
Step by Step Solution
- Step 1: Write the proportion equation
420,753.08 : 580,689.09 = 236,997.70 : x - Step 2: Convert to fraction form
420,753.08/580,689.09 = 236,997.70/x - Step 3: Cross multiply
420,753.08x = 580,689.09 × 236,997.70 - Step 4: Simplify right side
420,753.08x = 137,621,977,293.37 - Step 5: Solve for x
x = 137,621,977,293.37/420,753.08 - Step 6: Final answer
x = 327,084.89
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1.5x scale
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.