Finding the Fourth Proportional to 278,305.98, 384,098.47 and 155,844.99
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Solution
The fourth proportional to 278,305.98, 384,098.47 and 155,844.99 is: 215,086.37
Step by Step Solution
- Step 1: Write the proportion equation
278,305.98 : 384,098.47 = 155,844.99 : x - Step 2: Convert to fraction form
278,305.98/384,098.47 = 155,844.99/x - Step 3: Cross multiply
278,305.98x = 384,098.47 × 155,844.99 - Step 4: Simplify right side
278,305.98x = 59,859,822,216.17 - Step 5: Solve for x
x = 59,859,822,216.17/278,305.98 - Step 6: Final answer
x = 215,086.37
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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.