Finding the Fourth Proportional to 216,927.99, 299,344.01 and 121,421.70
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Solution
The fourth proportional to 216,927.99, 299,344.01 and 121,421.70 is: 167,552.64
Step by Step Solution
- Step 1: Write the proportion equation
216,927.99 : 299,344.01 = 121,421.70 : x - Step 2: Convert to fraction form
216,927.99/299,344.01 = 121,421.70/x - Step 3: Cross multiply
216,927.99x = 299,344.01 × 121,421.70 - Step 4: Simplify right side
216,927.99x = 36,346,857,971.91 - Step 5: Solve for x
x = 36,346,857,971.91/216,927.99 - Step 6: Final answer
x = 167,552.64
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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.