Finding the Fourth Proportional to 306,878.96, 423,378.36 and 306,405.86
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Solution
The fourth proportional to 306,878.96, 423,378.36 and 306,405.86 is: 422,725.65
Step by Step Solution
- Step 1: Write the proportion equation
306,878.96 : 423,378.36 = 306,405.86 : x - Step 2: Convert to fraction form
306,878.96/423,378.36 = 306,405.86/x - Step 3: Cross multiply
306,878.96x = 423,378.36 × 306,405.86 - Step 4: Simplify right side
306,878.96x = 129,725,608,384.30 - Step 5: Solve for x
x = 129,725,608,384.30/306,878.96 - Step 6: Final answer
x = 422,725.65
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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.