Finding the Fourth Proportional to 245,812.80, 368,719.20 and 211,987.20
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Solution
The fourth proportional to 245,812.80, 368,719.20 and 211,987.20 is: 317,980.80
Step by Step Solution
- Step 1: Write the proportion equation
245,812.80 : 368,719.20 = 211,987.20 : x - Step 2: Convert to fraction form
245,812.80/368,719.20 = 211,987.20/x - Step 3: Cross multiply
245,812.80x = 368,719.20 × 211,987.20 - Step 4: Simplify right side
245,812.80x = 78,163,750,794.24 - Step 5: Solve for x
x = 78,163,750,794.24/245,812.80 - Step 6: Final answer
x = 317,980.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.