Finding the Fourth Proportional to 243,442.20, 335,916.84 and 135,998.88
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Solution
The fourth proportional to 243,442.20, 335,916.84 and 135,998.88 is: 187,659.80
Step by Step Solution
- Step 1: Write the proportion equation
243,442.20 : 335,916.84 = 135,998.88 : x - Step 2: Convert to fraction form
243,442.20/335,916.84 = 135,998.88/x - Step 3: Cross multiply
243,442.20x = 335,916.84 × 135,998.88 - Step 4: Simplify right side
243,442.20x = 45,684,314,013.14 - Step 5: Solve for x
x = 45,684,314,013.14/243,442.20 - Step 6: Final answer
x = 187,659.80
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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.