Finding the Fourth Proportional to 286,879.40, 430,319.10 and 207,621.80
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Solution
The fourth proportional to 286,879.40, 430,319.10 and 207,621.80 is: 311,432.70
Step by Step Solution
- Step 1: Write the proportion equation
286,879.40 : 430,319.10 = 207,621.80 : x - Step 2: Convert to fraction form
286,879.40/430,319.10 = 207,621.80/x - Step 3: Cross multiply
286,879.40x = 430,319.10 × 207,621.80 - Step 4: Simplify right side
286,879.40x = 89,343,626,116.38 - Step 5: Solve for x
x = 89,343,626,116.38/286,879.40 - Step 6: Final answer
x = 311,432.70
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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.