Finding the Fourth Proportional to 821,103.30, 1,231,646.40 and 260,137.80
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Solution
The fourth proportional to 821,103.30, 1,231,646.40 and 260,137.80 is: 390,203.99
Step by Step Solution
- Step 1: Write the proportion equation
821,103.30 : 1,231,646.40 = 260,137.80 : x - Step 2: Convert to fraction form
821,103.30/1,231,646.40 = 260,137.80/x - Step 3: Cross multiply
821,103.30x = 1,231,646.40 × 260,137.80 - Step 4: Simplify right side
821,103.30x = 320,397,784,873.92 - Step 5: Solve for x
x = 320,397,784,873.92/821,103.30 - Step 6: Final answer
x = 390,203.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.