Finding the Fourth Proportional to 258,157.64, 356,235.26 and 143,434.19
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Solution
The fourth proportional to 258,157.64, 356,235.26 and 143,434.19 is: 197,926.80
Step by Step Solution
- Step 1: Write the proportion equation
258,157.64 : 356,235.26 = 143,434.19 : x - Step 2: Convert to fraction form
258,157.64/356,235.26 = 143,434.19/x - Step 3: Cross multiply
258,157.64x = 356,235.26 × 143,434.19 - Step 4: Simplify right side
258,157.64x = 51,096,316,140.96 - Step 5: Solve for x
x = 51,096,316,140.96/258,157.64 - Step 6: Final answer
x = 197,926.80
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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.