Finding the Fourth Proportional to 306,023.70, 459,035.55 and 128,471.70
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Solution
The fourth proportional to 306,023.70, 459,035.55 and 128,471.70 is: 192,707.55
Step by Step Solution
- Step 1: Write the proportion equation
306,023.70 : 459,035.55 = 128,471.70 : x - Step 2: Convert to fraction form
306,023.70/459,035.55 = 128,471.70/x - Step 3: Cross multiply
306,023.70x = 459,035.55 × 128,471.70 - Step 4: Simplify right side
306,023.70x = 58,973,077,468.94 - Step 5: Solve for x
x = 58,973,077,468.94/306,023.70 - Step 6: Final answer
x = 192,707.55
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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.