Finding the Fourth Proportional to 286,640.08, 430,132.92 and 99,782.80
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Solution
The fourth proportional to 286,640.08, 430,132.92 and 99,782.80 is: 149,734.35
Step by Step Solution
- Step 1: Write the proportion equation
286,640.08 : 430,132.92 = 99,782.80 : x - Step 2: Convert to fraction form
286,640.08/430,132.92 = 99,782.80/x - Step 3: Cross multiply
286,640.08x = 430,132.92 × 99,782.80 - Step 4: Simplify right side
286,640.08x = 42,919,867,129.78 - Step 5: Solve for x
x = 42,919,867,129.78/286,640.08 - Step 6: Final answer
x = 149,734.35
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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.