Finding the Fourth Proportional to 309,925.97, 465,068.45 and 129,995.40
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Solution
The fourth proportional to 309,925.97, 465,068.45 and 129,995.40 is: 195,068.39
Step by Step Solution
- Step 1: Write the proportion equation
309,925.97 : 465,068.45 = 129,995.40 : x - Step 2: Convert to fraction form
309,925.97/465,068.45 = 129,995.40/x - Step 3: Cross multiply
309,925.97x = 465,068.45 × 129,995.40 - Step 4: Simplify right side
309,925.97x = 60,456,759,185.13 - Step 5: Solve for x
x = 60,456,759,185.13/309,925.97 - Step 6: Final answer
x = 195,068.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.