Finding the Fourth Proportional to 320,719.68, 442,600.38 and 207,739.08
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Solution
The fourth proportional to 320,719.68, 442,600.38 and 207,739.08 is: 286,684.61
Step by Step Solution
- Step 1: Write the proportion equation
320,719.68 : 442,600.38 = 207,739.08 : x - Step 2: Convert to fraction form
320,719.68/442,600.38 = 207,739.08/x - Step 3: Cross multiply
320,719.68x = 442,600.38 × 207,739.08 - Step 4: Simplify right side
320,719.68x = 91,945,395,748.85 - Step 5: Solve for x
x = 91,945,395,748.85/320,719.68 - Step 6: Final answer
x = 286,684.61
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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.