Finding the Fourth Proportional to 306,579.74, 422,718.14 and 209,830.28
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Solution
The fourth proportional to 306,579.74, 422,718.14 and 209,830.28 is: 289,318.09
Step by Step Solution
- Step 1: Write the proportion equation
306,579.74 : 422,718.14 = 209,830.28 : x - Step 2: Convert to fraction form
306,579.74/422,718.14 = 209,830.28/x - Step 3: Cross multiply
306,579.74x = 422,718.14 × 209,830.28 - Step 4: Simplify right side
306,579.74x = 88,699,064,088.26 - Step 5: Solve for x
x = 88,699,064,088.26/306,579.74 - Step 6: Final answer
x = 289,318.09
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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.