Finding the Fourth Proportional to 415,935.60, 623,903.40 and 135,481.20
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Solution
The fourth proportional to 415,935.60, 623,903.40 and 135,481.20 is: 203,221.80
Step by Step Solution
- Step 1: Write the proportion equation
415,935.60 : 623,903.40 = 135,481.20 : x - Step 2: Convert to fraction form
415,935.60/623,903.40 = 135,481.20/x - Step 3: Cross multiply
415,935.60x = 623,903.40 × 135,481.20 - Step 4: Simplify right side
415,935.60x = 84,527,181,316.08 - Step 5: Solve for x
x = 84,527,181,316.08/415,935.60 - Step 6: Final answer
x = 203,221.80
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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.