Finding the Fourth Proportional to 245,542.80, 368,314.20 and 138,817.20
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Solution
The fourth proportional to 245,542.80, 368,314.20 and 138,817.20 is: 208,225.80
Step by Step Solution
- Step 1: Write the proportion equation
245,542.80 : 368,314.20 = 138,817.20 : x - Step 2: Convert to fraction form
245,542.80/368,314.20 = 138,817.20/x - Step 3: Cross multiply
245,542.80x = 368,314.20 × 138,817.20 - Step 4: Simplify right side
245,542.80x = 51,128,345,964.24 - Step 5: Solve for x
x = 51,128,345,964.24/245,542.80 - Step 6: Final answer
x = 208,225.80
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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.