Finding the Fourth Proportional to 245,659.16, 339,005.71 and 138,229.13
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Solution
The fourth proportional to 245,659.16, 339,005.71 and 138,229.13 is: 190,753.99
Step by Step Solution
- Step 1: Write the proportion equation
245,659.16 : 339,005.71 = 138,229.13 : x - Step 2: Convert to fraction form
245,659.16/339,005.71 = 138,229.13/x - Step 3: Cross multiply
245,659.16x = 339,005.71 × 138,229.13 - Step 4: Simplify right side
245,659.16x = 46,860,464,358.33 - Step 5: Solve for x
x = 46,860,464,358.33/245,659.16 - Step 6: Final answer
x = 190,753.99
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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.