Finding the Fourth Proportional to 392,855.08, 542,140.10 and 214,007.08
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Solution
The fourth proportional to 392,855.08, 542,140.10 and 214,007.08 is: 295,329.82
Step by Step Solution
- Step 1: Write the proportion equation
392,855.08 : 542,140.10 = 214,007.08 : x - Step 2: Convert to fraction form
392,855.08/542,140.10 = 214,007.08/x - Step 3: Cross multiply
392,855.08x = 542,140.10 × 214,007.08 - Step 4: Simplify right side
392,855.08x = 116,021,819,751.91 - Step 5: Solve for x
x = 116,021,819,751.91/392,855.08 - Step 6: Final answer
x = 295,329.82
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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.