Finding the Fourth Proportional to 345,521.14, 518,432.30 and 121,042.60
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Solution
The fourth proportional to 345,521.14, 518,432.30 and 121,042.60 is: 181,616.65
Step by Step Solution
- Step 1: Write the proportion equation
345,521.14 : 518,432.30 = 121,042.60 : x - Step 2: Convert to fraction form
345,521.14/518,432.30 = 121,042.60/x - Step 3: Cross multiply
345,521.14x = 518,432.30 × 121,042.60 - Step 4: Simplify right side
345,521.14x = 62,752,393,515.98 - Step 5: Solve for x
x = 62,752,393,515.98/345,521.14 - Step 6: Final answer
x = 181,616.65
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1.5x scale
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.