Finding the Fourth Proportional to 245,317.79, 338,548.14 and 137,887.49
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Solution
The fourth proportional to 245,317.79, 338,548.14 and 137,887.49 is: 190,290.12
Step by Step Solution
- Step 1: Write the proportion equation
245,317.79 : 338,548.14 = 137,887.49 : x - Step 2: Convert to fraction form
245,317.79/338,548.14 = 137,887.49/x - Step 3: Cross multiply
245,317.79x = 338,548.14 × 137,887.49 - Step 4: Simplify right side
245,317.79x = 46,681,551,576.03 - Step 5: Solve for x
x = 46,681,551,576.03/245,317.79 - Step 6: Final answer
x = 190,290.12
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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.