Finding the Fourth Proportional to 245,171.19, 338,344.95 and 137,739.06
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Solution
The fourth proportional to 245,171.19, 338,344.95 and 137,739.06 is: 190,084.79
Step by Step Solution
- Step 1: Write the proportion equation
245,171.19 : 338,344.95 = 137,739.06 : x - Step 2: Convert to fraction form
245,171.19/338,344.95 = 137,739.06/x - Step 3: Cross multiply
245,171.19x = 338,344.95 × 137,739.06 - Step 4: Simplify right side
245,171.19x = 46,603,315,368.75 - Step 5: Solve for x
x = 46,603,315,368.75/245,171.19 - Step 6: Final answer
x = 190,084.79
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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.