Finding the Fourth Proportional to 312,490.74, 468,109.17 and 143,776.02
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Solution
The fourth proportional to 312,490.74, 468,109.17 and 143,776.02 is: 215,375.58
Step by Step Solution
- Step 1: Write the proportion equation
312,490.74 : 468,109.17 = 143,776.02 : x - Step 2: Convert to fraction form
312,490.74/468,109.17 = 143,776.02/x - Step 3: Cross multiply
312,490.74x = 468,109.17 × 143,776.02 - Step 4: Simplify right side
312,490.74x = 67,302,873,388.10 - Step 5: Solve for x
x = 67,302,873,388.10/312,490.74 - Step 6: Final answer
x = 215,375.58
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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.