Finding the Fourth Proportional to 251,987.64, 347,743.80 and 138,810.12
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Solution
The fourth proportional to 251,987.64, 347,743.80 and 138,810.12 is: 191,558.44
Step by Step Solution
- Step 1: Write the proportion equation
251,987.64 : 347,743.80 = 138,810.12 : x - Step 2: Convert to fraction form
251,987.64/347,743.80 = 138,810.12/x - Step 3: Cross multiply
251,987.64x = 347,743.80 × 138,810.12 - Step 4: Simplify right side
251,987.64x = 48,270,358,607.26 - Step 5: Solve for x
x = 48,270,358,607.26/251,987.64 - Step 6: Final answer
x = 191,558.44
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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.