Finding the Fourth Proportional to 318,575.76, 439,611.88 and 189,507.12
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Solution
The fourth proportional to 318,575.76, 439,611.88 and 189,507.12 is: 261,506.34
Step by Step Solution
- Step 1: Write the proportion equation
318,575.76 : 439,611.88 = 189,507.12 : x - Step 2: Convert to fraction form
318,575.76/439,611.88 = 189,507.12/x - Step 3: Cross multiply
318,575.76x = 439,611.88 × 189,507.12 - Step 4: Simplify right side
318,575.76x = 83,309,581,296.59 - Step 5: Solve for x
x = 83,309,581,296.59/318,575.76 - Step 6: Final answer
x = 261,506.34
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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.