Finding the Fourth Proportional to 320,871.98, 442,664.30 and 193,476.80
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Solution
The fourth proportional to 320,871.98, 442,664.30 and 193,476.80 is: 266,914.15
Step by Step Solution
- Step 1: Write the proportion equation
320,871.98 : 442,664.30 = 193,476.80 : x - Step 2: Convert to fraction form
320,871.98/442,664.30 = 193,476.80/x - Step 3: Cross multiply
320,871.98x = 442,664.30 × 193,476.80 - Step 4: Simplify right side
320,871.98x = 85,645,272,238.24 - Step 5: Solve for x
x = 85,645,272,238.24/320,871.98 - Step 6: Final answer
x = 266,914.15
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1.5x scale
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.