Finding the Fourth Proportional to 258,506.91, 356,734.42 and 143,783.09
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Solution
The fourth proportional to 258,506.91, 356,734.42 and 143,783.09 is: 198,417.82
Step by Step Solution
- Step 1: Write the proportion equation
258,506.91 : 356,734.42 = 143,783.09 : x - Step 2: Convert to fraction form
258,506.91/356,734.42 = 143,783.09/x - Step 3: Cross multiply
258,506.91x = 356,734.42 × 143,783.09 - Step 4: Simplify right side
258,506.91x = 51,292,377,216.96 - Step 5: Solve for x
x = 51,292,377,216.96/258,506.91 - Step 6: Final answer
x = 198,417.82
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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.