Finding the Fourth Proportional to 420,486.29, 580,254.84 and 229,499.68
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Solution
The fourth proportional to 420,486.29, 580,254.84 and 229,499.68 is: 316,700.69
Step by Step Solution
- Step 1: Write the proportion equation
420,486.29 : 580,254.84 = 229,499.68 : x - Step 2: Convert to fraction form
420,486.29/580,254.84 = 229,499.68/x - Step 3: Cross multiply
420,486.29x = 580,254.84 × 229,499.68 - Step 4: Simplify right side
420,486.29x = 133,168,299,735.79 - Step 5: Solve for x
x = 133,168,299,735.79/420,486.29 - Step 6: Final answer
x = 316,700.69
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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.