Finding the Fourth Proportional to 283,640.80, 425,461.20 and 260,021.20
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Solution
The fourth proportional to 283,640.80, 425,461.20 and 260,021.20 is: 390,031.80
Step by Step Solution
- Step 1: Write the proportion equation
283,640.80 : 425,461.20 = 260,021.20 : x - Step 2: Convert to fraction form
283,640.80/425,461.20 = 260,021.20/x - Step 3: Cross multiply
283,640.80x = 425,461.20 × 260,021.20 - Step 4: Simplify right side
283,640.80x = 110,628,931,777.44 - Step 5: Solve for x
x = 110,628,931,777.44/283,640.80 - Step 6: Final answer
x = 390,031.80
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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.