Finding the Fourth Proportional to 254,649.12, 351,415.68 and 139,935.15
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Solution
The fourth proportional to 254,649.12, 351,415.68 and 139,935.15 is: 193,110.45
Step by Step Solution
- Step 1: Write the proportion equation
254,649.12 : 351,415.68 = 139,935.15 : x - Step 2: Convert to fraction form
254,649.12/351,415.68 = 139,935.15/x - Step 3: Cross multiply
254,649.12x = 351,415.68 × 139,935.15 - Step 4: Simplify right side
254,649.12x = 49,175,405,893.15 - Step 5: Solve for x
x = 49,175,405,893.15/254,649.12 - Step 6: Final answer
x = 193,110.45
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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.