Finding the Fourth Proportional to 245,510.91, 338,777.46 and 138,078.63
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Solution
The fourth proportional to 245,510.91, 338,777.46 and 138,078.63 is: 190,532.99
Step by Step Solution
- Step 1: Write the proportion equation
245,510.91 : 338,777.46 = 138,078.63 : x - Step 2: Convert to fraction form
245,510.91/338,777.46 = 138,078.63/x - Step 3: Cross multiply
245,510.91x = 338,777.46 × 138,078.63 - Step 4: Simplify right side
245,510.91x = 46,777,927,551.68 - Step 5: Solve for x
x = 46,777,927,551.68/245,510.91 - Step 6: Final answer
x = 190,532.99
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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.