Finding the Fourth Proportional to 230,529.79, 318,132.50 and 128,561.70
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Solution
The fourth proportional to 230,529.79, 318,132.50 and 128,561.70 is: 177,415.92
Step by Step Solution
- Step 1: Write the proportion equation
230,529.79 : 318,132.50 = 128,561.70 : x - Step 2: Convert to fraction form
230,529.79/318,132.50 = 128,561.70/x - Step 3: Cross multiply
230,529.79x = 318,132.50 × 128,561.70 - Step 4: Simplify right side
230,529.79x = 40,899,655,025.25 - Step 5: Solve for x
x = 40,899,655,025.25/230,529.79 - Step 6: Final answer
x = 177,415.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.