Finding the Fourth Proportional to 393,074.08, 542,274.12 and 256,871.62
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Solution
The fourth proportional to 393,074.08, 542,274.12 and 256,871.62 is: 354,372.98
Step by Step Solution
- Step 1: Write the proportion equation
393,074.08 : 542,274.12 = 256,871.62 : x - Step 2: Convert to fraction form
393,074.08/542,274.12 = 256,871.62/x - Step 3: Cross multiply
393,074.08x = 542,274.12 × 256,871.62 - Step 4: Simplify right side
393,074.08x = 139,294,831,688.47 - Step 5: Solve for x
x = 139,294,831,688.47/393,074.08 - Step 6: Final answer
x = 354,372.98
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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.