Finding the Fourth Proportional to 306,873.90, 423,371.39 and 306,400.82
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Solution
The fourth proportional to 306,873.90, 423,371.39 and 306,400.82 is: 422,718.70
Step by Step Solution
- Step 1: Write the proportion equation
306,873.90 : 423,371.39 = 306,400.82 : x - Step 2: Convert to fraction form
306,873.90/423,371.39 = 306,400.82/x - Step 3: Cross multiply
306,873.90x = 423,371.39 × 306,400.82 - Step 4: Simplify right side
306,873.90x = 129,721,337,411.68 - Step 5: Solve for x
x = 129,721,337,411.68/306,873.90 - Step 6: Final answer
x = 422,718.70
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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.