Finding the Fourth Proportional to 306,580.74, 422,719.52 and 209,831.28
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Solution
The fourth proportional to 306,580.74, 422,719.52 and 209,831.28 is: 289,319.47
Step by Step Solution
- Step 1: Write the proportion equation
306,580.74 : 422,719.52 = 209,831.28 : x - Step 2: Convert to fraction form
306,580.74/422,719.52 = 209,831.28/x - Step 3: Cross multiply
306,580.74x = 422,719.52 × 209,831.28 - Step 4: Simplify right side
306,580.74x = 88,699,777,962.59 - Step 5: Solve for x
x = 88,699,777,962.59/306,580.74 - Step 6: Final answer
x = 289,319.47
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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.