Finding the Fourth Proportional to 245,658.78, 339,006.91 and 138,226.66
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Solution
The fourth proportional to 245,658.78, 339,006.91 and 138,226.66 is: 190,751.55
Step by Step Solution
- Step 1: Write the proportion equation
245,658.78 : 339,006.91 = 138,226.66 : x - Step 2: Convert to fraction form
245,658.78/339,006.91 = 138,226.66/x - Step 3: Cross multiply
245,658.78x = 339,006.91 × 138,226.66 - Step 4: Simplify right side
245,658.78x = 46,859,792,886.22 - Step 5: Solve for x
x = 46,859,792,886.22/245,658.78 - Step 6: Final answer
x = 190,751.55
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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.