Finding the Fourth Proportional to 210,034.18, 289,869.65 and 128,410.32
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Solution
The fourth proportional to 210,034.18, 289,869.65 and 128,410.32 is: 177,219.99
Step by Step Solution
- Step 1: Write the proportion equation
210,034.18 : 289,869.65 = 128,410.32 : x - Step 2: Convert to fraction form
210,034.18/289,869.65 = 128,410.32/x - Step 3: Cross multiply
210,034.18x = 289,869.65 × 128,410.32 - Step 4: Simplify right side
210,034.18x = 37,222,254,597.41 - Step 5: Solve for x
x = 37,222,254,597.41/210,034.18 - Step 6: Final answer
x = 177,219.99
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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.