Finding the Fourth Proportional to 313,976.76, 470,981.40 and 103,631.08
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Solution
The fourth proportional to 313,976.76, 470,981.40 and 103,631.08 is: 155,451.99
Step by Step Solution
- Step 1: Write the proportion equation
313,976.76 : 470,981.40 = 103,631.08 : x - Step 2: Convert to fraction form
313,976.76/470,981.40 = 103,631.08/x - Step 3: Cross multiply
313,976.76x = 470,981.40 × 103,631.08 - Step 4: Simplify right side
313,976.76x = 48,808,311,141.91 - Step 5: Solve for x
x = 48,808,311,141.91/313,976.76 - Step 6: Final answer
x = 155,451.99
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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.