Finding the Fourth Proportional to 239,710.42, 330,699.74 and 168,137.20
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Solution
The fourth proportional to 239,710.42, 330,699.74 and 168,137.20 is: 231,958.75
Step by Step Solution
- Step 1: Write the proportion equation
239,710.42 : 330,699.74 = 168,137.20 : x - Step 2: Convert to fraction form
239,710.42/330,699.74 = 168,137.20/x - Step 3: Cross multiply
239,710.42x = 330,699.74 × 168,137.20 - Step 4: Simplify right side
239,710.42x = 55,602,928,324.33 - Step 5: Solve for x
x = 55,602,928,324.33/239,710.42 - Step 6: Final answer
x = 231,958.75
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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.