Finding the Fourth Proportional to 216,879.70, 299,291.04 and 121,386.36
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Solution
The fourth proportional to 216,879.70, 299,291.04 and 121,386.36 is: 167,511.53
Step by Step Solution
- Step 1: Write the proportion equation
216,879.70 : 299,291.04 = 121,386.36 : x - Step 2: Convert to fraction form
216,879.70/299,291.04 = 121,386.36/x - Step 3: Cross multiply
216,879.70x = 299,291.04 × 121,386.36 - Step 4: Simplify right side
216,879.70x = 36,329,849,926.21 - Step 5: Solve for x
x = 36,329,849,926.21/216,879.70 - Step 6: Final answer
x = 167,511.53
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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.