Finding the Fourth Proportional to 258,142.38, 356,237.91 and 143,421.18
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Solution
The fourth proportional to 258,142.38, 356,237.91 and 143,421.18 is: 197,922.02
Step by Step Solution
- Step 1: Write the proportion equation
258,142.38 : 356,237.91 = 143,421.18 : x - Step 2: Convert to fraction form
258,142.38/356,237.91 = 143,421.18/x - Step 3: Cross multiply
258,142.38x = 356,237.91 × 143,421.18 - Step 4: Simplify right side
258,142.38x = 51,092,061,412.93 - Step 5: Solve for x
x = 51,092,061,412.93/258,142.38 - Step 6: Final answer
x = 197,922.02
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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.