Finding the Fourth Proportional to 251,478.08, 347,026.88 and 138,278.96
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Solution
The fourth proportional to 251,478.08, 347,026.88 and 138,278.96 is: 190,817.89
Step by Step Solution
- Step 1: Write the proportion equation
251,478.08 : 347,026.88 = 138,278.96 : x - Step 2: Convert to fraction form
251,478.08/347,026.88 = 138,278.96/x - Step 3: Cross multiply
251,478.08x = 347,026.88 × 138,278.96 - Step 4: Simplify right side
251,478.08x = 47,986,516,058.44 - Step 5: Solve for x
x = 47,986,516,058.44/251,478.08 - Step 6: Final answer
x = 190,817.89
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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.