Finding the Fourth Proportional to 313,257.20, 469,972.20 and 155,490.80
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Solution
The fourth proportional to 313,257.20, 469,972.20 and 155,490.80 is: 233,279.09
Step by Step Solution
- Step 1: Write the proportion equation
313,257.20 : 469,972.20 = 155,490.80 : x - Step 2: Convert to fraction form
313,257.20/469,972.20 = 155,490.80/x - Step 3: Cross multiply
313,257.20x = 469,972.20 × 155,490.80 - Step 4: Simplify right side
313,257.20x = 73,076,353,355.76 - Step 5: Solve for x
x = 73,076,353,355.76/313,257.20 - Step 6: Final answer
x = 233,279.09
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1.5x scale
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.