Finding the Fourth Proportional to 245,895.67, 339,368.34 and 138,486.70
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Solution
The fourth proportional to 245,895.67, 339,368.34 and 138,486.70 is: 191,129.85
Step by Step Solution
- Step 1: Write the proportion equation
245,895.67 : 339,368.34 = 138,486.70 : x - Step 2: Convert to fraction form
245,895.67/339,368.34 = 138,486.70/x - Step 3: Cross multiply
245,895.67x = 339,368.34 × 138,486.70 - Step 4: Simplify right side
245,895.67x = 46,998,001,491.08 - Step 5: Solve for x
x = 46,998,001,491.08/245,895.67 - Step 6: Final answer
x = 191,129.85
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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.