Finding the Fourth Proportional to 438,460.68, 657,709.50 and 138,934.62
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Solution
The fourth proportional to 438,460.68, 657,709.50 and 138,934.62 is: 208,407.79
Step by Step Solution
- Step 1: Write the proportion equation
438,460.68 : 657,709.50 = 138,934.62 : x - Step 2: Convert to fraction form
438,460.68/657,709.50 = 138,934.62/x - Step 3: Cross multiply
438,460.68x = 657,709.50 × 138,934.62 - Step 4: Simplify right side
438,460.68x = 91,378,619,452.89 - Step 5: Solve for x
x = 91,378,619,452.89/438,460.68 - Step 6: Final answer
x = 208,407.79
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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.