Finding the Fourth Proportional to 347,069.76, 478,991.60 and 211,113.08
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Solution
The fourth proportional to 347,069.76, 478,991.60 and 211,113.08 is: 291,357.54
Step by Step Solution
- Step 1: Write the proportion equation
347,069.76 : 478,991.60 = 211,113.08 : x - Step 2: Convert to fraction form
347,069.76/478,991.60 = 211,113.08/x - Step 3: Cross multiply
347,069.76x = 478,991.60 × 211,113.08 - Step 4: Simplify right side
347,069.76x = 101,121,391,970.13 - Step 5: Solve for x
x = 101,121,391,970.13/347,069.76 - Step 6: Final answer
x = 291,357.54
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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.