Finding the Fourth Proportional to 251,686.23, 347,326.88 and 138,508.98
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Solution
The fourth proportional to 251,686.23, 347,326.88 and 138,508.98 is: 191,142.33
Step by Step Solution
- Step 1: Write the proportion equation
251,686.23 : 347,326.88 = 138,508.98 : x - Step 2: Convert to fraction form
251,686.23/347,326.88 = 138,508.98/x - Step 3: Cross multiply
251,686.23x = 347,326.88 × 138,508.98 - Step 4: Simplify right side
251,686.23x = 48,107,891,875.38 - Step 5: Solve for x
x = 48,107,891,875.38/251,686.23 - Step 6: Final answer
x = 191,142.33
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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.