Finding the Fourth Proportional to 313,219.13, 432,242.70 and 169,979.20
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Solution
The fourth proportional to 313,219.13, 432,242.70 and 169,979.20 is: 234,571.46
Step by Step Solution
- Step 1: Write the proportion equation
313,219.13 : 432,242.70 = 169,979.20 : x - Step 2: Convert to fraction form
313,219.13/432,242.70 = 169,979.20/x - Step 3: Cross multiply
313,219.13x = 432,242.70 × 169,979.20 - Step 4: Simplify right side
313,219.13x = 73,472,267,271.23 - Step 5: Solve for x
x = 73,472,267,271.23/313,219.13 - Step 6: Final answer
x = 234,571.46
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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.