Finding the Fourth Proportional to 319,415.08, 440,789.86 and 176,176.15
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Solution
The fourth proportional to 319,415.08, 440,789.86 and 176,176.15 is: 243,121.46
Step by Step Solution
- Step 1: Write the proportion equation
319,415.08 : 440,789.86 = 176,176.15 : x - Step 2: Convert to fraction form
319,415.08/440,789.86 = 176,176.15/x - Step 3: Cross multiply
319,415.08x = 440,789.86 × 176,176.15 - Step 4: Simplify right side
319,415.08x = 77,656,660,493.84 - Step 5: Solve for x
x = 77,656,660,493.84/319,415.08 - Step 6: Final answer
x = 243,121.46
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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.