Finding the Fourth Proportional to 393,358.06, 542,920.08 and 250,090.12
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Solution
The fourth proportional to 393,358.06, 542,920.08 and 250,090.12 is: 345,179.02
Step by Step Solution
- Step 1: Write the proportion equation
393,358.06 : 542,920.08 = 250,090.12 : x - Step 2: Convert to fraction form
393,358.06/542,920.08 = 250,090.12/x - Step 3: Cross multiply
393,358.06x = 542,920.08 × 250,090.12 - Step 4: Simplify right side
393,358.06x = 135,778,947,957.61 - Step 5: Solve for x
x = 135,778,947,957.61/393,358.06 - Step 6: Final answer
x = 345,179.02
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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.