Finding the Fourth Proportional to 245,076.86, 338,213.58 and 137,649.08
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Solution
The fourth proportional to 245,076.86, 338,213.58 and 137,649.08 is: 189,959.95
Step by Step Solution
- Step 1: Write the proportion equation
245,076.86 : 338,213.58 = 137,649.08 : x - Step 2: Convert to fraction form
245,076.86/338,213.58 = 137,649.08/x - Step 3: Cross multiply
245,076.86x = 338,213.58 × 137,649.08 - Step 4: Simplify right side
245,076.86x = 46,554,788,130.51 - Step 5: Solve for x
x = 46,554,788,130.51/245,076.86 - Step 6: Final answer
x = 189,959.95
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1.5x scale
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.