Finding the Fourth Proportional to 343,753.80, 515,630.70 and 320,425.80
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Solution
The fourth proportional to 343,753.80, 515,630.70 and 320,425.80 is: 480,638.70
Step by Step Solution
- Step 1: Write the proportion equation
343,753.80 : 515,630.70 = 320,425.80 : x - Step 2: Convert to fraction form
343,753.80/515,630.70 = 320,425.80/x - Step 3: Cross multiply
343,753.80x = 515,630.70 × 320,425.80 - Step 4: Simplify right side
343,753.80x = 165,221,379,552.06 - Step 5: Solve for x
x = 165,221,379,552.06/343,753.80 - Step 6: Final answer
x = 480,638.70
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1.5x scale
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.