Finding the Fourth Proportional to 306,910.44, 423,421.74 and 306,437.40
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Solution
The fourth proportional to 306,910.44, 423,421.74 and 306,437.40 is: 422,769.12
Step by Step Solution
- Step 1: Write the proportion equation
306,910.44 : 423,421.74 = 306,437.40 : x - Step 2: Convert to fraction form
306,910.44/423,421.74 = 306,437.40/x - Step 3: Cross multiply
306,910.44x = 423,421.74 × 306,437.40 - Step 4: Simplify right side
306,910.44x = 129,752,257,109.08 - Step 5: Solve for x
x = 129,752,257,109.08/306,910.44 - Step 6: Final answer
x = 422,769.12
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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.