Finding the Fourth Proportional to 306,439.56, 459,657.81 and 78,734.93
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Solution
The fourth proportional to 306,439.56, 459,657.81 and 78,734.93 is: 118,101.99
Step by Step Solution
- Step 1: Write the proportion equation
306,439.56 : 459,657.81 = 78,734.93 : x - Step 2: Convert to fraction form
306,439.56/459,657.81 = 78,734.93/x - Step 3: Cross multiply
306,439.56x = 459,657.81 × 78,734.93 - Step 4: Simplify right side
306,439.56x = 36,191,123,196.01 - Step 5: Solve for x
x = 36,191,123,196.01/306,439.56 - Step 6: Final answer
x = 118,101.99
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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.