Finding the Fourth Proportional to 313,991.70, 433,156.20 and 186,577.08
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Solution
The fourth proportional to 313,991.70, 433,156.20 and 186,577.08 is: 257,385.84
Step by Step Solution
- Step 1: Write the proportion equation
313,991.70 : 433,156.20 = 186,577.08 : x - Step 2: Convert to fraction form
313,991.70/433,156.20 = 186,577.08/x - Step 3: Cross multiply
313,991.70x = 433,156.20 × 186,577.08 - Step 4: Simplify right side
313,991.70x = 80,817,018,979.90 - Step 5: Solve for x
x = 80,817,018,979.90/313,991.70 - Step 6: Final answer
x = 257,385.84
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1.5x scale
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.