Finding the Fourth Proportional to 245,918.21, 339,360.48 and 138,485.93
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Solution
The fourth proportional to 245,918.21, 339,360.48 and 138,485.93 is: 191,106.84
Step by Step Solution
- Step 1: Write the proportion equation
245,918.21 : 339,360.48 = 138,485.93 : x - Step 2: Convert to fraction form
245,918.21/339,360.48 = 138,485.93/x - Step 3: Cross multiply
245,918.21x = 339,360.48 × 138,485.93 - Step 4: Simplify right side
245,918.21x = 46,996,649,981.24 - Step 5: Solve for x
x = 46,996,649,981.24/245,918.21 - Step 6: Final answer
x = 191,106.84
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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.