Finding the Fourth Proportional to 211,981.97, 292,521.35 and 121,338.65
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Solution
The fourth proportional to 211,981.97, 292,521.35 and 121,338.65 is: 167,439.45
Step by Step Solution
- Step 1: Write the proportion equation
211,981.97 : 292,521.35 = 121,338.65 : x - Step 2: Convert to fraction form
211,981.97/292,521.35 = 121,338.65/x - Step 3: Cross multiply
211,981.97x = 292,521.35 × 121,338.65 - Step 4: Simplify right side
211,981.97x = 35,494,143,635.88 - Step 5: Solve for x
x = 35,494,143,635.88/211,981.97 - Step 6: Final answer
x = 167,439.45
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1.5x scale
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.