Finding the Fourth Proportional to 485,403.21, 727,532.96 and 218,851.65
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Solution
The fourth proportional to 485,403.21, 727,532.96 and 218,851.65 is: 328,019.64
Step by Step Solution
- Step 1: Write the proportion equation
485,403.21 : 727,532.96 = 218,851.65 : x - Step 2: Convert to fraction form
485,403.21/727,532.96 = 218,851.65/x - Step 3: Cross multiply
485,403.21x = 727,532.96 × 218,851.65 - Step 4: Simplify right side
485,403.21x = 159,221,787,631.13 - Step 5: Solve for x
x = 159,221,787,631.13/485,403.21 - Step 6: Final answer
x = 328,019.64
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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.