Finding the Fourth Proportional to 316,800.81, 475,202.84 and 80,143.70
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Solution
The fourth proportional to 316,800.81, 475,202.84 and 80,143.70 is: 120,215.95
Step by Step Solution
- Step 1: Write the proportion equation
316,800.81 : 475,202.84 = 80,143.70 : x - Step 2: Convert to fraction form
316,800.81/475,202.84 = 80,143.70/x - Step 3: Cross multiply
316,800.81x = 475,202.84 × 80,143.70 - Step 4: Simplify right side
316,800.81x = 38,084,511,071.38 - Step 5: Solve for x
x = 38,084,511,071.38/316,800.81 - Step 6: Final answer
x = 120,215.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.