Finding the Fourth Proportional to 406,865.76, 561,507.84 and 225,595.68
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Solution
The fourth proportional to 406,865.76, 561,507.84 and 225,595.68 is: 311,340.39
Step by Step Solution
- Step 1: Write the proportion equation
406,865.76 : 561,507.84 = 225,595.68 : x - Step 2: Convert to fraction form
406,865.76/561,507.84 = 225,595.68/x - Step 3: Cross multiply
406,865.76x = 561,507.84 × 225,595.68 - Step 4: Simplify right side
406,865.76x = 126,673,742,990.13 - Step 5: Solve for x
x = 126,673,742,990.13/406,865.76 - Step 6: Final answer
x = 311,340.39
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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.