Finding the Fourth Proportional to 412,231.79, 569,158.04 and 257,419.60
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Solution
The fourth proportional to 412,231.79, 569,158.04 and 257,419.60 is: 355,412.75
Step by Step Solution
- Step 1: Write the proportion equation
412,231.79 : 569,158.04 = 257,419.60 : x - Step 2: Convert to fraction form
412,231.79/569,158.04 = 257,419.60/x - Step 3: Cross multiply
412,231.79x = 569,158.04 × 257,419.60 - Step 4: Simplify right side
412,231.79x = 146,512,434,993.58 - Step 5: Solve for x
x = 146,512,434,993.58/412,231.79 - Step 6: Final answer
x = 355,412.75
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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.