Finding the Fourth Proportional to 278,293.80, 383,898.36 and 197,753.88
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Solution
The fourth proportional to 278,293.80, 383,898.36 and 197,753.88 is: 272,795.84
Step by Step Solution
- Step 1: Write the proportion equation
278,293.80 : 383,898.36 = 197,753.88 : x - Step 2: Convert to fraction form
278,293.80/383,898.36 = 197,753.88/x - Step 3: Cross multiply
278,293.80x = 383,898.36 × 197,753.88 - Step 4: Simplify right side
278,293.80x = 75,917,390,215.64 - Step 5: Solve for x
x = 75,917,390,215.64/278,293.80 - Step 6: Final answer
x = 272,795.84
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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.