Finding the Fourth Proportional to 306,495.20, 459,742.80 and 213,183.20
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Solution
The fourth proportional to 306,495.20, 459,742.80 and 213,183.20 is: 319,774.80
Step by Step Solution
- Step 1: Write the proportion equation
306,495.20 : 459,742.80 = 213,183.20 : x - Step 2: Convert to fraction form
306,495.20/459,742.80 = 213,183.20/x - Step 3: Cross multiply
306,495.20x = 459,742.80 × 213,183.20 - Step 4: Simplify right side
306,495.20x = 98,009,441,280.96 - Step 5: Solve for x
x = 98,009,441,280.96/306,495.20 - Step 6: Final answer
x = 319,774.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.