Finding the Fourth Proportional to 216,929.60, 299,360.54 and 121,437.08
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Solution
The fourth proportional to 216,929.60, 299,360.54 and 121,437.08 is: 167,581.88
Step by Step Solution
- Step 1: Write the proportion equation
216,929.60 : 299,360.54 = 121,437.08 : x - Step 2: Convert to fraction form
216,929.60/299,360.54 = 121,437.08/x - Step 3: Cross multiply
216,929.60x = 299,360.54 × 121,437.08 - Step 4: Simplify right side
216,929.60x = 36,353,469,844.82 - Step 5: Solve for x
x = 36,353,469,844.82/216,929.60 - Step 6: Final answer
x = 167,581.88
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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.