Finding the Fourth Proportional to 219,482.05, 302,869.51 and 128,841.70
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Solution
The fourth proportional to 219,482.05, 302,869.51 and 128,841.70 is: 177,792.32
Step by Step Solution
- Step 1: Write the proportion equation
219,482.05 : 302,869.51 = 128,841.70 : x - Step 2: Convert to fraction form
219,482.05/302,869.51 = 128,841.70/x - Step 3: Cross multiply
219,482.05x = 302,869.51 × 128,841.70 - Step 4: Simplify right side
219,482.05x = 39,022,222,546.57 - Step 5: Solve for x
x = 39,022,222,546.57/219,482.05 - Step 6: Final answer
x = 177,792.32
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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.